Vinay Pacha – Page 36 – Eureka Math Answers

3 Times Table Multiplication Chart | Tips & Tricks to remember Table of 3 | How to Read and Write Multiplication Table of Three?

March 29, 2021

Learning the 3 Times Table Multiplication Chart helps you to keep a track of odd numbers, knowing the table helps students to save a lot of time, mainly in the time-based examination it will be easy to solve any type of mathematical problems. Multiplication Table of 3 is important for the students to memorize the table, it will helps to do a fast and quick calculation. Math Tables have a strong foundation for learning such as Multiplication, Division and Fractions, etc. In this article, you will learn how to read and write the Multiplication Table of Three, Tips & Tricks to memorize the table.

3 Times Table Multiplication Chart

If we learn the 3 Times Table Multiplication Chart simply and easily, you can download the Table of 3 in image format with free pay for a better understanding of students and solving the basic mathematical problems like multiplication, divisions, LCM, etc, so here we can easily download the 3 Times Table Multiplication Chart and try to memorize it, it helps in competitive exams for doing fast calculations.

Multiplication Table of 3 up to 20 | How to write Table of 3?

Here given the first 20 multiples of 3 for your comfort. You can remember the 3 Times Table Multiplication Chart output to make your math problems solving easily. You can improve your math skills to gave speed answering the math problems in exams. The below section is a tabular form of a 3 Times Table Multiplication Chart, it will help to perform the arithmetic operations quickly.

3	x	1	=	3
3	x	2	=	6
3	x	3	=	9
3	x	4	=	12
3	x	5	=	15
3	x	6	=	18
3	x	7	=	21
3	x	8	=	24
3	x	9	=	27
3	x	10	=	30
3	x	11	=	33
3	x	12	=	36
3	x	13	=	39
3	x	14	=	42
3	x	15	=	45
3	x	16	=	48
3	x	17	=	51
3	x	18	=	54
3	x	19	=	57
3	x	20	=	60

How to read Table of 3 in words?

One time three is 3

Two times three is 6

Three times three is 9

Four times three is 12

Five times three is 15

Six times three is 18

Seven times three is 21

Nine times three is 27

Ten times three is 30

Eleven times three is 33

Twelve times three is 36

Thirteen times three is 39

Fourteen times three is 42

Fifteen times three is 45

Sixteen times three is 48

seventeen times three is 51

Eighteen times three is 54

Nineteen times three is 57

Twenty times three is 60

Why should one learn a 3 Times Multiplication Table?

Learning of 3 Times Table is very important and has some advantages also for doing mathematical problems. There are many aspects of mathematics that require time tables to spend less time for solving.

Multiplication Table Chart saves your time while performing multiplications, divisions, LCM, Fractions etc.
Learning tables helps to solve the mathematical problems easily and quickly.
The pattern will be easily understands for learning 3 Times Table Multiplication Chart.
3 Times Multiplication Table makes you perfect in performing the quick calculations.

Get More Multiplication Tables

1 Times Table Multiplication Chart	2 Times Table Multiplication Chart	4 Times Table Multiplication Chart
5 Times Table Multiplication Chart	6 Times Table Multiplication Chart	7 Times Table Multiplication Chart
8 Times Table Multiplication Chart	9 Times Table Multiplication Chart	10 Times Table Multiplication Chart
11 Times Table Multiplication Chart	12 Times Table Multiplication Chart	13 Times Table Multiplication Chart
14 Times Table Multiplication Chart	15 Times Table Multiplication Chart	16 Times Table Multiplication Chart
17 Times Table Multiplication Chart	18 Times Table Multiplication Chart	19 Times Table Multiplication Chart
20 Times Table Multiplication Chart	21 Times Table Multiplication Chart	22 Times Table Multiplication Chart
23 Times Table Multiplication Chart	24 Times Table Multiplication Chart	25 Times Table Multiplication Chart

Tips & Tricks to remember Table of 3

Memorize of 3 Times Table Multiplication Chart Tips & Tricks are listed below.

To Remembering the 3 Times Multiplication Table, first you have to know how many numbers are increased to get each resultant.
Learning the 3 Times Table Multiplication Chart using skip counting process.
The patterns will help to remember the product of two numbers.
Learning the Table of 3 Times helps to solve mathematical problems easily
Practice each table until you get perfect on it and also practice the number of multiplication facts.
The last digit of these 3 multiples will always repeat. You can remember these digits to memorize the multiples of 3 easily.

Solved Examples on 3 Times Table

Example 1:

Calculate the value of 3 plus 3 times of 7 minus 4, using the 3 Times Table?

Solution:

Given, calculate the value using 3 Times Table

First, we have to write down the given statement 3 plus 3 times of 7 minus 4

Now, solving the above expression by using 3 Times Table Multiplication Chart,

3 plus 3 times 7 minus 4 = 3 + 3 x 7 – 4

= 3 + 21 – 4

= 3 + 17

= 20

Therefore the value of 3 plus 3 times of 7 minus 4 is 20.

Example 2:

There are 3 dogs, each dog has 15 biscuits. How many biscuits are there in total?

Solution:

Given that,

The number of dogs is 3

Number of biscuits per each dog has 15 biscuits.

Now, find the total number of biscuits

According to law of multiplication ,we can finding the total number of biscuits

By using 3 times table,

The total number of biscuits = 3 x 15 = 45

so , all the dogs have totally 45 biscuits.

Therefore, the total biscuits are 45.

Example 3:

John has 6 cards with numbers 7, 13, 15, 18 ,20, 24, 28 written on them. Take help from the table of 3, and assist john in identifying the cards which are 3 times any number?

Solution:

Given 8 cards numbers are 7, 13, 15, 18, 20, 24, 28

From the table of 3 multiples, the first 10 multiples of whole numbers are 3, 6, 9, 12, 15, 18, 21, 24, 27, 30.

Therefore, among the 7 cards only 3 multiple cards are 15, 18, 24. These 3 card numbers are the only table of 3 multiples, so john has 3 card numbers of 3 multiples.

Example 4:

By using the 3 Times Table find the (i) 3 times 12 (ii) 3 times 3 plus 7 (iii) 3 times 4 minus 3 (iv) 3 times 2 multiple of 5?

Solution:

(i) Given, find the value of 3 times 12

By using the 3 times table, to solve the given expression

3 Times 12 in mathematical expression is equal to 3 X 12 = 36.

So, the value of 3 times 12 is equal to 36.

(ii) Given, to find the value of 3 times 3 plus 7

By using the 3 Times table, to solve the given expression

3 times 3 plus 7 can be written in mathematical expression as,

3 x 3 +7

9+ 7 = 16

so, the value of 3 x 3 + 7 is equal to 16.

(iii) Given, finding the value of 3 times 4 minus 3

By using the 3 times table, to solve the given expression

We can write the given expression in mathematical form as 3 x 4 – 3

3 x 4 -3 = 12 – 3 = 9

so, the value of 3 x 4 – 3 is 9.

(iv) Given, finding the value of 3 times 2 multiple of 5

By using the 3 times table, to solve the given expression

We can write the given expression in mathematical form as,

3 x 2 x 5 = 6 x 5 = 30

So,the value of 3 times 2 multiples of 5 is equal to 30.

Order of a Matrix – Definition, Examples | How to Determine the Order of Matrix? | Matrix Multiplication

March 24, 2021

Before we learn about the Order of a Matrix let us know What is a Matrix. Matrices are defined as a rectangular array of numbers or functions. It is a rectangular array and two- dimensional. A Matrix is a rectangular array of numbers or symbols which are generally arranged in rows and columns. The plural of matrix is matrices. The entries are the numbers in the matrix and each number is known as an element.

Order a Matrix – Definition

Basically, a two-dimensional matrix consists of the number of rows and the number of columns. The order of the matrix is defined as the number of rows and columns. The number of rows is represented by ‘m’ and the number of columns is represented by ‘n’. Therefore the order of the matrix is equal to m x n, and it is also called as ‘m by n’.

The size of the matrix is written as m x n, where m is the number of rows and n is the number of columns. For example, we have a 3 x 2 matrix, the number of rows is equal to 3, and the number of columns is equal to 2.

Different Types of Matrices

There are different types of matrices, basically categorized on the basis of the value of their elements, their order, number of rows and number of columns, etc. Now, using different conditions, the various matrix types are categorized along with their definition.

Row Matrix
Column Matrix
Null Matrix
Square Matrix
Diagonal Matrix
Upper Triangular Matrix
Lower Triangular Matrix
Symmetric Matrix
Anti- Symmetric Matrix
Equal Matrix
Singular Matrix
Non Singular Matrix
Horizontal Matrix
Vertical Matrix
Unity or identity Matrix.

Row Matrix: A Matrix having only one row is called a Row Matrix. A= [a_ij]_mxn is a row matrix , if m=1 then row matrix is represented as A= [a_ij]_1xn. It has only one row and the order of a matrix will be 1 x n. For example, A= [1 2 4 5] is row matrix of order 1 x 4.

Column Matrix: A Matrix having only one column is called a Column Matrix. A= [a_ij]_mxn is a column matrix, if n=1 then column matrix is represented as A= [a_ij]_mx1. It has only one column and the order of a matrix will be m x 1. Just like row matrices had only one row, column matrices have only one column. Thus the value of the column matrix will be 1.

Null Matrix: Null Matrix is also called Zero Matrix. In a matrix all the elements are zero then it is called a Zero Matrix or Null Matrix and it is generally denoted by 0. Thus, A = [a_ij]_mxnis a Zero or Null Matrix.

Unity or Identity Matrix: If a square matrix has all elements 0 and each diagonal element is non-zero, it is called an identity matrix. It is denoted by I.

Equal Matrix: If two matrices are said to be equal if they are same order if their corresponding elements are equal to the square matrix.

Square Matrix: If the number of rows and the number of columns in a matrix are equal, then it is called Square Matrix.

How to find Order of a Matrix?

A Two- Dimensional matrix consists of the number of rows (m) and a number of columns (n). The order of the matrix is equal to m x n (also pronounced as ‘m by n’).

Order of Matrix = Number of Rows x Number of Columns.

In the above, you can see, the matrix has 2 rows and 4 columns. Therefore, the order of the matrix is 2 x 4.

How will you Determine the Order of Matrix?

If a matrix has m number of rows and n number of columns, now let’s know how to find the order of the matrix.

Here few examples, how to find the order of a matrix,

[1 2 3] is an example, in this, the order of the matrix is (1 x 3), which means the number of rows (m) is 1 and the number of columns (n) is 3.

[7 5] is an example of (1 x 2) matrix, in this number of rows are (m) is 1 and number of columns (n) is 2.
$ A =\left[
\begin{matrix}
6 & 2 & 3\cr
12 & 15 & 35 \cr
\end{matrix}
\right]
$

The order of the above matrix is (2 x 3), in this number of rows is (m) is 2, and the number of columns (n) is 3.

A matrix of the order m x n has mn elements. Hence we say that if the number of elements in a matrix is prime, then it must have one row or one column. Usually, we denote a matrix by using capital letters such as A, B, C, D, M, N, X, Y, Z, etc.

The product of m and n can be obtained in more than one ways, some of the ways are,

mn x 1
1 x mn
m x n
n x m

Number of Elements in Matrix

Suppose, A is the order of 2 x 3. Therefore, the number of elements present in a matrix will also be 2 times 3, i.e 6.

Similarly, the other matrix order is 4 x 3, thus the number of elements will be 12 i.e. 4 times 3. If we know the order of a matrix, we can easily determine the total number of elements that the matrix has,

If a matrix is of m x n order, it will have mn element.

Order of a Matrix Examples

Example 1.

If matrix A has an 8 number of elements, then determine the order of the matrix.

Solution:

We know that number of elements is 8

Let’s write all the possible factors of the number 8

8 = 1 x 8

8 = 4 x 2

8 = 2 x 4

8 = 8 x 1

we can get the number 8 is four ways.

Therefore, there are four possible ways or orders of the matrix with 8 number of elements are 1 x 8, 2 x 4, 4 x 2, and 8 x 1.

Example 2.

If a matrix X has 7 number of elements, find the order of the matrix.

Solution:

We know that number of elements is 7

Let’s write all the possible factors of the number 7

7 = 1 x 7

7= 7 x 1

we can get the number 7 in two ways.

Therefore, there are two possible ways or orders of the matrix with 7 number of elements are 1 x 7, 7 x 1.

Example 3.

What is the order of a matrix given below?

$ A =\left[
\begin{matrix}
1 & 2 & 9\cr
18 & 12 & 15 \cr
\end{matrix}
\right]
$

Solution:

The number of rows in a given matrix is A = 2

The number of columns in a given matrix is A = 3

Therefore, the order of matrix is 2 x 3.

Example 4.

What is the order of a matrix given below?

$ A =\left[
\begin{matrix}
4 & 5 & 7\cr
11 & 14 & 18 \cr
21 & 24 & 8 \cr
\end{matrix}
\right]
$

Solution:

The number of rows in a given matrix is A = 3

The number of columns in a given matrix is A = 3

Therefore, the order of the matrix is 3 x 3.

FAQ’s on Order of Matrix

1. What is Matrix and Types?

A Matrix can be defined as a rectangular array of numbers or functions. A matrix consists of rows (m) and columns (n) that is m x n. Types of Matrices are :

Row Matrix
Column Matrix
Null Matrix
Equal Matrix
Unity or Identity Matrix
Square Matrix
Rectangular Matrix
Horizontal Matrix
Vertical Matrix
Scalar Matrix

2. What is the Null Matrix?

Null Matrix is also called Zero Matrix. In a matrix all the elements are zero then it is called a Zero Matrix or Null Matrix and it is generally denoted by 0. Thus, A = [a_ij]_mxnis a Zero or Null Matrix.

3. What is another name of Unity Matrix?

Another name of the unity matrix is Identity Matrix. If a square matrix has all elements 0 and each diagonal element is non-zero, it is called an Identity Matrix. It is denoted by I.

4. What is the order of Square Matrix?

A Matrix that has a number of rows is equal to a number of columns is called Square Matrix. In this matrix, all the elements are arranged in m number of rows and n number of columns . So the order of the matrix is denoted by mxn.

5. Explain a Scalar Matrix?

Scalar Matrix is similar to a square matrix. In the scalar matrix, all off-diagonal elements are equal to zero and all on diagonal elements happen to be equal. In other words, the Scalar Matrix is an identity matrices multiple.

Line of Symmetry – Definition, Facts, Types and Examples

March 23, 2021

Symmetry can be split into two mirror-image halves. Suppose you can fold any picture, in it half you see both sides match, it is called Symmetrical. The word “symmetry” comes from a Greek word that implies measuring together. The two objects are claimed to be symmetrical if they have an identical size and shape with one object having a different orientation from the first. You are already acquainted with the term symmetry which is a balanced and proportionate similarity found in two halves of an object, one – half is the mirror image of the other half.

Line of Symmetry – Introduction

Line of symmetry means, it is the line that passes through the center of the object or any shape and it is considered as the imaginary or axis line of the object. Another name of line symmetry is “Reflection symmetry”, one half is the reflection of the other half. Reflection symmetry sometimes called line symmetry or Mirror symmetry. The line of symmetry can be in any direction.

For example, if we cut an equilateral triangle into two equal halves, then the two triangles are formed after the intersection is the right-angled triangles. Take one more example, if we cut an orange into two equal halves, then one of the pieces is said to be in symmetry with another. Rectangle, circle, square are also considered examples of line symmetry.

Line of Symmetry – Definition

Line of symmetry is defined as, a line that cuts a shape exactly in half, if you fold the shape or figure along the line, both halves would match exactly that is symmetrical halves. It is also termed as Axis of symmetry. The line symmetry also called a reflection symmetry or mirror symmetry because it presents two reflections of an image that can coincide.

A line of symmetry may be one or more lines of symmetry. Symmetry has many types such as

Infinite lines of symmetry
One line of symmetry
Two lines of symmetry
Multiple lines of symmetry (more than two lines is called multiple lines)
No line of symmetry means the figure is asymmetrical.

There are many shapes that are irregular and cannot be divided into equal parts. Such shapes are termed asymmetrical shapes. Hence, in such cases, line symmetry is not applicable. Line of symmetry are two types:

Vertical line of symmetry
Horizontal line of symmetry

Also, Read:

Types of Line of Symmetry

Basically, the line of symmetry is of two types. The line or axes may be any combination of Vertical, Horizontal, and Diagonal. Two types of lines of symmetry are

Vertical line of symmetry
Horizontal line of symmetry

Vertical Line of Symmetry

A vertical line of symmetry refers to one which runs down an image or figure and divides into two identical halves. The mirror image of the other half of the shape can be seen in a vertical or straight standing position. A, H, M, O, U, V, W, T, Y are some of the alphabets that can be divided vertically in symmetry. The trapezoid has only the vertical line of symmetry.

Horizontal Line of Symmetry

The Horizontal line of symmetry is a line or axis of a shape which runs across the image, it divides into two identical halves is known as the Horizontal Line of Symmetry. B, C, H, E, are some of the alphabets that can be divided horizontally in symmetry.

Some other types of lines of symmetries are there. Those are three lines of symmetry, four lines of symmetry, five lines of symmetry, six lines of symmetry, and infinite lines of symmetry.

Three Lines of Symmetry

An Equilateral Triangle has about three lines of symmetry. It is symmetrical along its three medians.

Some other patterns also have three lines of symmetry.

Four Lines of Symmetry

A square has four lines of symmetry. It can be folded in half over either diagonal, the horizontal segment which cuts the square in half, and the vertical segment which cuts the square in half. so, the square has four lines of symmetry.

A square is symmetrical along four lines of symmetry, two along the diagonals and two along with the midpoints of the opposite sides. some other patterns also have four lines of symmetry.

Five Lines of Symmetry

A regular pentagon has around five lines of symmetry. The lines joining a vertex to the mid-point of the opposite side divide the figure into ten symmetrical halves. Some other patterns also have five lines of symmetry.

Six Lines of Symmetry

A regular polygon with N sides has N lines of symmetry. Hexagon is said to have six lines of symmetry, 3 joining the opposite vertices and 3 joining the midpoints of the opposite sides.

Six Lines of Symmetry

Infinite Lines of Symmetry

A circle has its diameter as the line of symmetry, and a circle can have an infinite number of diameters. It is symmetrical along all its diameters.

Examples of Lines of Symmetry

Line of Symmetry has different figures and we have outlined few examples

A Triangle is said to have 3, 1 number lines of symmetry
A quadrilateral has 4 or 2 number lines of symmetry
An Equilateral Triangle has 3- lines of symmetry
A Regular Pentagon has 5lines of symmetry
A Regular Heptagon has 7 lines of symmetry
A circle has an infinite number of lines of symmetry

Real-Life Examples of Lines of Symmetry

Reflection of trees in clear water.
Reflection of mountains in a lake.
Most butterflies’ wings are identical on the left and right sides.
Some human faces are the same on the left and right.
People can also have a symmetrical mustache.

FAQ’s on Line of Symmetry

1. How many lines of symmetry does a circle have?

A circle has infinite lines of symmetry.

2. What is the figure of reflection symmetry on a vertical mirror?

A rectangle is the figure of reflection symmetry on a vertical mirror.

3. Define Line of Symmetry?

The imaginary line or axis along which you can fold a figure to obtain the symmetrical halves is called the line of symmetry. It is also termed the axis of symmetry. The other names of Line of Symmetry are Reflection Symmetry or Mirror Symmetry.

4. What are the types of Lines of Symmetry?

Lines of Symmetry are of two types, the first one is the Vertical line of symmetry and the second one is the Horizontal line of symmetry.

5. Define Vertical Line of Symmetry?

The axis of the shape or object or figure which divides the shape into two identical halves Vertically is called a Vertical line of symmetry.

6. Define Horizontal Line of Symmetry?

The axis of the shape or figure or object that divides the shape into two identical halves Horizontally is called a horizontal line of symmetry.

Worksheet on Area and Perimeter of Rectangles

Worksheet on Area and Perimeter of Rectangle | Area and Perimeter of Rectangles Problems with Solutions

March 22, 2021

Worksheet on Area and Perimeter of Rectangle Problems will help the students to explore their knowledge of Rectangle word Problems. Solve all the Problems to learn the formula of Area of Rectangle and Perimeter of a Rectangle. To know the definition, properties, derivation, Problems with Solutions, Formulas of Rectangle you can visit our website. We have given the complete Rectangle concept along with examples. Check out the Area and Perimeter of Rectangle Problems Worksheet and know the various strategies to solve problems in an easy and understandable way.

Perimeter and Area of a Rectangle – Definitions

A Rectangle is a quadrilateral with two equal sides and two parallel lines and four right angles. Four right angles vertices are equal to 90 degrees, it is also called an equiangular quadrilateral.

The perimeter of the rectangle is defined as the sum of all the sides of the rectangle. Rectangle has two lengths and breadths, it is denoted by P, it is measured in units. For finding the perimeter of the rectangle we have to add the length and breadth.

Perimeter of the Rectangle, P = 2(l + b)

The area of the rectangle is defined as to calculate the length and breadth of the two- dimensional closed figure. For finding the area of the rectangle we have to multiply the length and breadth, it is denoted by A, measured in square units.

Area of the rectangle , A = l x b

Problems on Area and Perimeter of the Rectangle

1. Find the Area and Perimeter of the following rectangles whose dimensions are :

(i) length = 15 cm breadth = 12 cm

(ii) length = 7.9 m breadth = 6.2 m

(iii) length = 4 m breadth = 36 cm

(iv) length = 2 m breadth = 6 dm

Solution:

(i) Given, length = 15 cm, breadth = 12 cm

we know that, Perimeter of rectangle = 2 (length + breadth)

substitute the given values in above formula, we get

Perimeter of rectangle = 2 (15 + 12) cm

= 2 × 27 cm

= 54 cm

We know that, area of rectangle = length × breadth

Therefore, substituting the values in above formula, we get

Area of rectangle = 15 cm x 12 cm

= (15 × 12) cm²

= 195 cm²

Therefore, Area of rectangle is 195 cm²

(ii) Given, length = 7 m, breadth = 6.2 m

we know that, Perimeter of rectangle = 2 (length + breadth)

substitute the values in the formula , we get

Perimeter of rectangle = 2 (7.9 + 6.2) m

= 2 × 14. 1 m

= 28. 2 m

We know that, area of rectangle = length × breadth

Therefore, substituting the value we get,

Area of rectangle = 7.9 m x 6.2 m

= (7.9 × 6.2) m²

= 48. 98m²

Therefore, Area of rectangle = 48. 98 m²

(iii) Given, length = 4 m

breadth = 36 cm = 36/ 100 = 0. 36 m ( cm is converted to m)

we know that, Perimeter of rectangle = 2 (length + breadth)

substitute the values in the formula, we get

Perimeter of a rectangle = 2 (4 + 36) m

= 2 × 40 m

The perimeter of a rectangle is 80 m

We know that, area of rectangle = length × breadth

substituting the value we get,

Area of rectangle = 4 m× 36 m

= (4 x 36) m²

= 144 m²

Therefore, Area of a rectangle is 144 m²

(iv) Given, length = 2 m

breadth = 60 dm

1m = 10 dm

so we get, 60 dm = 6 m ( dm is converted to m)

we know that, Perimeter of rectangle = 2 (length + breadth)

substitute the values in the formula, we get

Perimeter of rectangle = 2 (2 + 6) m

= 2 × 8 m

= 16 m

We know that, area of rectangle = length × breadth

substituting the value we get,

Area of rectangle = 2 m× 6 m

= (2x 6) m² = 12 m²

Therefore, the Area of a rectangle is 12m².

2. The perimeter of the rectangle is 140 cm. If the length of the rectangle is 30 cm, find its breadth and area of the rectangle?

Solution:

Given, Perimeter of the rectangle is, 140 cm

The length of the rectangle is, 30 cm

we know that, Perimeter of the rectangle = 2(l + b)

substitute the value in the above formula, we get

140 = 2( 30 + b)

70 = 30

40 = b

Therefore, breadth = 40 cm

Now, Area of Rectangle = length x breadth

= 30 x 40 = 120 cm²

Therefore, the Area of a rectangle is 120 cm²

3. The area of a rectangle is 78 cm². If the breadth of the rectangle is 6 cm, find its length and perimeter?

Solution:

Given, Area of a rectangle is 78 cm²

The breadth of the rectangle is 6 cm

we know that, Area of rectangle = length x breadth

substitute the given value, we get

78 cm = length x 6 cm

78/ 6 = length

Length of the rectangle =12 cm

Now, perimeter of rectangle = 2 (l + b)

substitute the value, we get

Perimeter of rectangle = 2(12 + 6)

= 2 x 18

= 36 cm

Therefore, the perimeter of the rectangle = 36 cm

4. How many boxes whose length and breadth are 9 cm and 5 cm respectively are needed to cover a rectangular region whose length and breadth are 420 cm and 90 cm?

Solution:

Given, Length of the box is 9 cm

The breadth of the box is 5 cm

Region length is 420 cm

Region breadth is 90 cm

we know the formula,

The area of a rectangle is l x b

Therefore, Area of region = l x b

substitute the value, we get

Area of region = 420 cm x 90 cm

= 37800 cm²

Again use the area of a rectangle formula,

Area of one box is = 9 cm x 5 cm

= 45 cm²

Number of boxes = Area of region /Area of one box = 37800/45 = 840

Thus, 840 boxes are required.

5. If it costs $500 to fence a rectangular park of length 40 m at the rate of $25 per m², find the breadth of the park and its perimeter. Also, find the area of the field?

Solution:

Given, Cost of Rectangular park fencing is $500

Length of the rectangular park = 20 m

Rate of fencing 1 m² = $25

Area of a rectangle = l x b

Now we find area , therefore Area = 500/ 25 = 20

substitute the value in formula, we get

20 = 20 x breadth

breadth = area / length

b = 20 / 20 = 1 m

Now finding the Perimeter,

Perimeter of a rectangle = 2 (l + b)

substituting the values ,

Perimeter of a rectangle= 2 (20 + 1)

= 2 (21)

Therefore, the Perimeter of a rectangle = 41 m

6. A rectangular tile has a length equals to 20 cm and a perimeter equals 70 cm. Find its width?

Solution:

Given, Perimeter of the tile = 80 cm

Length of the tile = 20 cm

Let W be the width of the tile

we know that,

Perimeter of a rectangle = 2(length + width)

Substituting the values, we get,

The perimeter of a tile = 80 cm

Therefore, 80 = 2 (20 + Width)

80/ 2 = 20 + Width

40 = 20 + Width

40 – 20 = Width

Therefore, Width = W = 20.

7. Find the area of a rectangle, Perimeter of a rectangle, and diagonal of a rectangle whose length and breadth 12 cm and 16 cm respectively.

Solution:

Given, length of the rectangle = 12 cm

Breadth of the rectangle = 16 cm

we know the formulae,

Area of a rectangle = l x b

substitute the values in the above formula, we get

Area of a rectangle = 12 x 16 = 192 cm²

we know, Perimeter of a rectangle = 2 (l + b)

substitute the values, we get

Perimeter of a rectangle = 2 (12 + 16)

= 2 (192) = 384 m

Now, we finding the diagonal of a rectangle

The diagonal of a rectangle is d² = l² + b²

substitute the values, we get

d² = (12)² + (16)²

d² = (12 + 16)²

d = √(12 + 16)²

square and root both will be cancelled,

d = 12 + 16 = 28

Therefore, the Diagonal of a rectangle = 28 cm.

8. Find the cost of tiling a rectangular plot of land 200 m long and 120 m wide at the rate of $6 per hundred square m?

Solution:

Given,

Cost of tiling rectangular plot of land 200 m long and 120 m wide

The cost of tiling per 100 sq.m is $6

we know the area of a rectangle formula,

Area of a rectangle = length x breadth

substituting the values in the above formula, we get

Area of a rectangle = 200 m x 120 m

= 24000 m²

Therefore, the Area of a rectangle is 24000 m²

Now, we finding the total cost of tiling

Total cost of tiling = (6 x 24000) / 100

= 144000/100

= $1440

Therefore, the Total cost of tiling is $1440

9. The length of a rectangular board is thrice its width. If the width of the board is 140 cm, find the cost of framing it at the rate of $5 for 30 cm.

Solution:

Given, the width of the board = 140 cm

length of the board is thrice

so ,length = 3 x width

length = 3 x 140 = 420 cm

30 cm rate is $5

Circumference of rectangle = 2 ( l+ b)

substitute the values in the above formula, we get

Circumference of rectangle = 2 ( 420 + 140)

= 2 x 560 = 1120 cm
Therefore, the circumference of rectangle = 1120 cm

Now, 30 cm cost is equal to rs. 5

So, 1 cm = 5/ 30

But, we want the cost of framing

So, 1120 = (5 x 1120)/ 20 = rs. 280

Therefore, the cost of framing is Rs. 280

10. The Perimeter of a rectangular pool is 46 meters. If the length of the pool is 16 meters, then find its width. Here the perimeter and length of the rectangular pool are given. we have to find the width of the pool.

Solution:

Given,

The perimeter of a rectangular pool is 46 meters

The length of the pool is 16 meters

Now we find the width of the pool.

we know the formula,

Perimeter of a rectangle = 2(l + b)

substituting the values, we get

46 = 2( 16) +2( w)

46= 32 + 2w

46 – 32 = 2W

14 = 2W

W= 14/2 = 7 meters

Therefore, the width of the Pool is 7 meters.

11. The sides of a rectangle are in the ratio of 4: 5 and its perimeter is 90 cm. Find the dimensions of the rectangle and hence its area.

Solution:

Given, Perimeter of a rectangle is 90 cm

Length of the sides = 4 : 5

Let the common ratio be X

So the sides will be 4X and 5X

we know that,

The Sum of all sides of the rectangle is equal to the perimeter.

so, Perimeter of a rectangle = 2 ( length + breadth)

substituting the values, we get

90 = 2(l) + 2(b)

90 = 2(4X) + 2 (5X)

90 = 8X + 10 X

18 X = 90

Therefore, X = 90/18 = 5

Hence , length = 4X and breadth = 5X

substitute the ‘X’ value, we get

length = 4(5) = 20 , Breadth = 5(5) = 25

Now we find the area of a rectangle,

Area of a rectangle = length x breadth

substitute the values in the formula, we get

Area of a rectangle = 20 cm x 25 cm

= 500 cm²

Therefore, the Area of a rectangle is 500 cm².

Units of Measurement – Definition, Conversion, Examples | Metric Units of Length, Mass, Volume, Time

March 20, 2021

In the metric system of measurement, the meter is the basic unit of length, a gram is the basic unit of mass and liter is the basic unit of capacity. We can use a centimeter(cm) to measure the length. Centimeter and Millimeter are very small units to measure the length, so we use another unit called meters.

Learn completely about the Units of a Measurement- Definition, Units Conversion, Prefix for Length, Time, Weight, and Volume or Capacity. Get to know the Importance of SI Units, Solved Examples on How to Convert one unit to another, etc.

Metric System – Introduction

The French are widely credited with originating the metric system of measurement, the system is officially adopted in 1795. It was originated in the year 1799. Metric System is basically a system used for measuring distance, length, volume, weight, and temperature. The term metric system is used as another word for SI or the international system of units. Based on three basic units we can measure almost everything in the world, those are M- Meter, used to measure the length, Kg- Kilogram, used to measure the mass, and S- Second, used to measure time.

Units of Measurement – Definition

The SI system, also called the metric system, is used around the world. SI units stand for standard International System of the units. Seven basic units in the SI system, give proper definitions for meter, kilogram, and the second. It also specifies and defines remaining four different units:

1. Kelvin(K)- used to measure the Temperature

2. Ampere(A)- used to measure the Electric current

3. Candela(cd)- used to measure the Luminous Intensity

4. Mole(mol)- used to measure the Material Quantity

Also, Read:

Units of Measurement Conversion

To convert among units in the metric system, identify the unit that you have, the unit that you want to convert to, and then count the number of units between them. Some units are connected with each other by the following relation:

1 Kilometer (km) = 1000 meter (m)

1 meter (m) = 100 centimeter (cm)

1 centimeter (cm) = 10 millimeter (mm)

Metric Units Prefix

A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. To convert from one unit to another within the metric system usually means moving a decimal point. you can convert within the metric system relatively easily by simply multiplying or dividing the number by the value of prefix.

In order to remember the proper movements of units, arrange the prefixes from the largest to the smallest.

Now, let us discuss some of the units for length, weight, volume, time.

Units of Measurement Length

The most common unit used to measure the length are as follows. Centimeters and millimeters are very small to measure the length so, we use another unit that is the meter (m). Even meter is too small when we measure the distance between two cities, we use kilometers (km).

Kilometer (km)	Hectometer (hm)	Decameter (dam)	Meter (m)	Decimeter (dm)	Centimeter (cm)	Millimeter (mm)
1000	100	10	1	1/10	1/100	1/1000

Units of Measurement for Volume or Capacity

A liter is a metric unit of volume. The most common units used to measure the capacity or volume of any object are as follows:

1 liter (l) = 1000 milliliters (ml)

Kiloliter (kl)	Hectoliter (hl)	Decaliter(dal)	Liter (l)	Deciliter (dl)	Centiliter(cl)	Milliliter(ml)
1000	100	10	1	1/10	1/100	1/1000

Units of Measurement for Weight

To measure the weight of the compound, we can use a smaller unit called milligrams. The most common units to measure the weight of any object are as follows:

1 kilograms (kg) = 1000 grams (gm)

1 grams (gm) = 1000 milligrams (mg)

1 kilograms (kg) = 1000 × 1000 milligrams (mg) = 1,000,000 milligrams (mg)

Kilogram (kg)	Hectogram (hg)	Decagram (dag)	Gram (g)	Decigram (dg)	Centigram(cg)	Milligram (mg)
1000	100	10	1	1/10	1/100	1/1000

SI Unit of Measurement for Time

The SI unit for the period, as for all the measurements of time, is the Second. The other units of Time are minute, hour, day, week, month, year, and century. Now let us discuss some other units of time.

1 minute = 60 seconds

1 hour = 60 minutes

1day = 24 hours

1 week = 7 days

1 month = 30 or 31 days

NOTE: February has 28 days, but in leap year February has 29 days.

1 year = 12 hours or 365 days (in a leap year 366 days)

Importance of Standard Unit of Measurement

We need standard units for measurement, to make our judgment more reliable, accurate, and uniformity. It is important because it allows scientists to compare data and communicate with each other about their results. To avoid confusion when measuring, scientists use a shared system of measurement called the international system of units (SI).

units-of-meausrement.png (396×314) | Metric measurement chart, Metric conversion chart, Unit conversion chart

common metric units

Units of Measurement Examples

Example 1: Convert 248 centimeters to meters?

Solution:

We know that, 1 cm = 0.01 mThus , 248 cm = 248 x 0.01 = 2.48 m

now , 248 cm = 2. 48 m

Therefore, 248 cm is equivalent to 2.48 m.

Example 2:

Convert 2000 grams to kilograms?

Solution:

We know that, 1 gram = 0.001 grams

Thus , 2000 grams = 2000 x 0.001 = 2 kilogram

2000 grams = 2 kilograms

Therefore, 2000 grams is equivalent to 2 kilograms.

Example 3:

Convert 20 kiloliters to liters?

Solution:

We know that 1 kiloliter = 1000 liters

Thus, 20 litres = 20 x 1000 litres = 20000 liters

20 kiloliters = 20000 liters

Therefore, 20 kiloliters are equivalent to 20000 liters.

Example 4:

Convert 150 kg to milligrams?

Solution:

We know that, 1 gram = 1000 milligrams and 1 kg = 1000 grams

So, first we convert the kg to g as :

1 kg = 1000 g

Therefore, 150 kg = 150 x 1000 g = 150,000 grams

Now, converting g to mg:

1 g = 1000 mg

Therefore , 150,000 g = 150,000 x 1000 mg = 250,000,000 mg.

FAQ’S on Units of Measurements

1. What are the base units for Length, Weight, and Volume in a Metric System?

The base units for length, weight, and volume in a metric system are meters, grams, and liters respectively.

2. Mention the US Standard Units for Length, Weight, and Volume?

In US systems, the units used are:

Distance or length in miles, yards, feet, inches
Mass or weight in pounds, tons, ounces
Capacity or volume in cups, gallons or quarts, pints, fluid ounces.

3. What are the advantages of using a Standard Unit of Measurement?

The advantage of the SI unit is, it has only one unit for each quantity. suppose the one and only SI unit of length is the meter (m).

4. Why do we use Measurement?

Measurements require tools and provide scientists with a quantity. A quantity describes how much of something there is or how many there are.

5. What is a Standard Unit?

Standard units are the units we usually use to measure the weight, length, and volume of the objects.

Area of a Square – Definition, Formula, Examples | How to find the Area of a Square?

March 19, 2021

An Area is a space or a region occupied by any shape. Square is a two-dimensional figure with four sides, it is also known as a quadrilateral. The area of a square is defined as the number of square units needed to fill a square. In other words, a square is a product of two sides, length, and breadth that are equal. In the square, all four angles are also equal. Square has four equal sides and four vertices. The diagonals of the square are equal and bisect each other at 90 degrees, angles of the square are equal to 90 degrees. If a square is cut by a plane from the center, then both halves are symmetrical.

Learn completely about the Area of a Square Definition, Formula, and Units. Get to know the Properties of a Square, Solved Examples on How to Calculate the Area of a Square, etc.

Do Read: Practice Test on Area and Perimeter of Square

Area of a Square – Definition

The area of a square is defined as the total number of unit squares in the shape of a square. A Square is a rectangle whose length and breadth are equal which means all four sides are equal.

Area of a Square Formula

The area of a square formula is used for calculating the occupied region. It is measured in square units.

Area of a square=side x side

Perimeter of a Square Formula

The perimeter of the square is equal to the sum of all its four sides. The unit of the perimeter remains the same as that of the side-length of a square.

Perimeter=side+side+side+side=4side unit

Perimeter =4 x side of the square = 4a unit

Where ‘a’ is the length of the side of the square.

Also, Read: Perimeter of a Square

Length of Diagonal of a Square

The length of the diagonals of the square is equal to s√2, where s is the side of the square. The length of the diagonals is equal to each other. By Pythagoras theorem, diagonal is the hypotenuse and the two sides of the triangle formed by the diagonal of the square, are perpendicular and base. Hypotenuse²=Base² + Perpendicular²

Hence,Diagonal²=side² + side²

Diagonal=√2side², d=s√2

where d is the length of the diagonal of a square and s is the side of the square.

Diagonal of Square

It is a line segment that connects two opposite vertices of the square. Suppose we have four vertices, thus we can have two diagonals within a square. The diagonal of a square is always greater than its sides.

The relation between Diagonal ‘d’ and Side ‘a’ of a square is, d=a√2

The relation between Diagonal ‘d’ and Area ‘A’ of a square is, d=√(2A)

The relation between Diagonal ‘d’ and Perimeter ‘P’ of a square is,d=p/2√2

Area of Square Units

Usually, the Area of the Square is measured in the Square Units since each side of the square is the same. Some of the Common Units of Measurement and their equivalent are expressed below.

1 m=100 cm
1 sq.m=10,000 sq.cm
1 km=1000 m
1 sq.km=1,000,000 sq.m

Properties of a Square

Have a glance at the Properties of Square and get an idea of them so that you might find them useful while solving related problems. They are as follows

The square has 4 vertices and 4 sides.
All four interior angles are equal to 90⁰.
The opposite sides of the square are parallel to each other.
The two diagonals of the square are equal to each other.
The length of diagonals is greater than the sides of the square.

Solved Problems on Area of a Square

1. Find the Area of a square of the Side 2.5 cm?

Solution:

Given, Area of a square of the side is 2.5 cm

Area of a square = length x length

Substitute the given value in the above formula,

= 2.5 x 2.5 sq. cm

= 6. 25 sq. cm

2. Find the area of a square of side 49 m?

Solution:

Given, Area of a square of the side is 49 m

Area of a square = length x length

Substitute the given value in the above formula,

= 49 x 49 sq. m.

= 2401 sq. m.

3. Let a square has a side equal to 3 cm. Find out its area, length of diagonal, and perimeter?

Solution:

Given, side of the square, s= 3 cm

Area of a square= s²

Therefore, by substituting the value of the side, we get,

3² = 9 cm²

Length of the diagonal of square = s√2

By substituting the value, we get,

3 x 1.414 = 4.242

The perimeter of the square = 4 xs

substituting the value in the above formula, we get,

4 x 3= 12 cm.

4. Find the area of a square clipboard whose side measures 120 cm?

Solution:

Given, side of the clipboard = 140 cm = 1.4 m

Area of the clipboard = side x side

substituting the value in the above formula, we get,

Area of the clipboard = 140 cm x 140 cm

= 19,600 sq . cm

= 1.96 sq . m

5. A wall that is 40 m long and 30 m wide is to be covered by square tiles. The side of each tile is 2 m. Find the number of tiles required to cover the wall?

Solution:

Given, Length of the wall = 40 m

The breadth of the wall = 30 m

Area of the wall = Length x breadth

substituting the length and breadth values, we get

Area of the wall= 40 m x 30 m = 1200 sq. m

side of one tile = 2 m

Area of one tile = side x side

substitute the value in the above formula, we get

Area of one tile =2 m x 2 m= 4 sq. m

No. of tiles required = Area of wall/ Area of a tile

substitute the value, we get

No.of tiles required = 1200/ 4 = 300 tiles

FAQ’s on Area of a Square

1. What is the Area of a Square Formula?

The area of a square can be calculated by using a formula side x side square units.

2. Define Perimeter and Area of a Square?

The perimeter of a square is the sum of all the four sides of a square, whereas the Area of a square is defined as the region or the space occupied by a square in the two-dimensional space.

3. How is a Square different from a Rectangle?

A square has all its sides are equal in length whereas a rectangle has only its opposite sides are equal in length.

4. What are the real-life examples of a Square?

Some of the real-life examples of a square are Carrom Board, Square tiles, Square shaped tables, Cubes, Chess Board, etc.

Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies

March 4, 2021

Go Math Grade 1 Chapter 4 Answer Key Subtraction Strategies

Curious George

Six little chicks are on the fence. Two chicks hop away. How many are there now?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 1$

Show What You Know

Model Subtraction

Use $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 2$ to show each number. Take away. Write how many are left.

Question 1.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 2.1$

Question 2.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 3$

Use Symbols to Subtract
Use the picture. Write the subtraction sentence.

Question 3.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 4$

Question 4.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 5$

Subtract All or Zero
Write how many are left.

Question 5.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 6$

Question 6.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 7$

Subtraction Strategies Vocabulary Builder

Visualize It
Complete the chart.
Mark each row with a $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 8$
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 9$

Understand Vocabulary
Complete the sentences with review words.

Question 1.
3 is the ___ for 5 – 2 = 3.

Question 2.
7 – 4 = 3 is a __.

Question 3.
You __ to solve 5 – 1.

Question 4.
You can __ 2 $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 10$ from 6 $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 11$

Subtraction Strategies Game: Under the Sea

Materials
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 12$

Play with a partner. Take turns.
1. Put your $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 13$ on START.
2. Spin the $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 14$ Move that number of spaces.
3. Spin again. Subtract that number from the number on the game board space.
4. Use $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 15$ to check your answer. If you are not correct, lose a turn.
5. The first player to get to END wins.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 15.1$

Subtraction Strategies Vocabulary Game

Picture It

Materials
timer

How to Play
Play with two other players.
1. Choose a secret word from the Word Box. Do not tell the other players.
2. Set the timer.
3. Draw pictures to show clues for the secret word.
4. The first player to guess the word before time runs out gets 1 point.
5. Take turns.
6. The first player to score 5 points wins.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 14.1$

The Write Way

Reflect
Choose one idea. Draw and write about it.
• Write sentences that use two of these math words.
subtract difference count back subtraction sentence
• MiWon needs to solve this problem:
11 – 7 = _____
Tell about two ways MiWon could solve it.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 15.2$

Lesson 4.1 Count Back

Essential Question
How can you count back 1, 2, or 3?

Listen and Draw

Start at 9. Count back to find the difference.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 16$

Math Talk
MATHEMATICAL PRACTICES
Reasoning Why do you count backward to find the difference?

Model and Draw

You can count back to subtract.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 17$

Share and Show MATH BOARD

Use $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 18$
Count back 1, 2, or 3 to subtract.
Write the difference.

Question 1.
5 – 1 = __

Question 2.
__ = 5 – 2

Question 3.
6 – 1 = __

Question 4.
__ = 6 – 3

Question 5.
7 – 2 = __

Question 6.
__ = 7 – 3

Question 7.
10 – 1 = _

Question 8.
__ = 10 – 2

Question 9.
12 – 3 = __

Question 10.
__ = 8 – 2

Question 9.
12 – 3 = __

Question 10.
__ = 8 – 2

Question 11.
4 – 3 = __

Question 12.
__ = 9 – 1

On Your Own

MATHEMATICAL PRACTICE
Attend to Precision
Count back 1, 2, or 3. Write the difference.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 18.1$

Question 13.
9 – 3 = __

Question 14.
__ = 5 – 3

Question 15.
6 – 3 = __

Question 16.
7 – 2 = __

Question 17.
__ = 10 – 1

Question 18.
8 – 1 = __

Question 19.
5 – 2 = __

Question 20.
__ = 8 – 3

Question 21.
11 – 3 = __

Question 22.
THINK SMARTER
Jaime has 6 carrots on her plate. She eats 2 carrots. How many carrots are on her plate now?
__ – __ = __ carrots

Question 23.
GO DEEPER
There are 12 flowers in Sasha’s garden. She picks 3 flowers for her father. Then she picks 2 flowers for her mother. How many flowers are in the garden now?
__ – __ = __
__ – __ = __ flowers

Question 24.
THINK SMARTER
Alex subtracts 3 from 10. What is a subtraction sentence he could write?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 19$

Problem Solving • Applications

Write a subtraction sentence to solve.

Question 25.
GO DEEPER Carlos has 11 train cars. He puts 2 train cars on the track. How many train cars are off the track?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 20$
__ – __ = __ train cars

Then Carlos puts 1 more train car on the track. How many train cars are off the track now?
__ – __ = __ erasers

Question 26.
Sofia has 8 erasers. She gives 2 to Ben. How many erasers does Sofia have now?
___ – __ = __ erasers

Question 27.
THINK SMARTER
Write the number that is 1 less.
9 – 1 = $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 21$

TAKE HOME ACTIVITY
• Have your child show how to use the count back strategy to find the difference for 7 − 2. Repeat with other problems to count back 1, 2, or 3 from 12 or less.

Count Back Homework & Practice 4.1

Count back 1, 2, or 3. Write the difference.

Question 1.
___ 7 – 3

Question 2.
8 – 3 = ___

Question 3.
4 – 3 = ___

Question 4.
__ = 9 – 1

Question 5.
__ = 7 – 1

Question 6.
__ = 6 – 2

Question 7.
6 – 1 = __

Question 8.
5 – 3 = ___

Question 9.
__ = 11 – 3

Question 10.
5 – 2 = __

Question 11.
10 – 2 = __

Question 12.
__ = 10 – 3

Question 13.
__ = 9 – 3

Question 14.
4 – 2 = __

Question 15.
__ = 7 – 2

Problem Solving

Write a subtraction sentence to solve.

Question 16.
Tina has 12 pencils. She gives away 3 pencils. How many pencils are left?
__ – ___ = __
__ pencils

Question 17.
WRITE Math
Use pictures or words to explain how you can solve 7 – 3 by counting back.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 22$

Lesson Check

Question 1.
Count back 3. What is the difference? Write the number.
__ = 10 – 3

Question 2.
Count back 2. What is the difference? Write the number.
7 – 2 = __

Spiral Review

Question 3.
Write a doubles fact to solve. Kai has 14 marbles. Some are blue and some are yellow. The number of blue marbles is the same as the number of yellow marbles.
__ = __ + __

Question 4.
Draw a picture to find the sum. Write the number sentence. There are 4 big dogs and 3 small dogs. How many dogs are there?
__ + __ = __

Lesson 4.2 Think Addition to Subtract

Essential Question
How can you use an addition fact to find the answer to a subtraction fact?

Listen and Draw

Use $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 23$ to model the problem. Draw $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 24$ to show your work.
5 + __ = 12

12 – 5 = __

Math Talk
MATHEMATICAL PRACTICES
Look for Structure Explain how 5 + 7 = 12 can help you find 12 − 5.

Model and Draw

What is 9 − 4?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 24.1$

Share and Show MATH BOARD

Use $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 24.2$ to add and to subtract.

Question 1.
What is 8 − 6?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 24.3$

Question 2.
What is 8 − 4?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 25$

Question 3.
What is 10 − 4?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 26$

Question 4.
What is 12 − 6?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 27$

On Your Own

MATHEMATICAL PRACTICE

Model Mathematics
Use $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 28$ to add and to subtract.

Question 5.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 28.1$

Question 6.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 29$

Question 7.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 30$

Question 8.
THINK SMARTER
Carol can use an addition sentence to write a subtraction sentence. Write a subtraction sentence she can solve using 6 + 8 = 14.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 31$
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 32$

Question 9.
Write an addition sentence Carol can use to help her solve 13 − 9.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 33$

Problem Solving • Applications

Write a number sentence to solve.

Question 10.
There are 14 cats. 7 are black. The rest are yellow. How many yellow cats are there?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 34$
___ yellow cats

Question 11.
I had some pencils. I gave 4 pencils away. Now I have 2 pencils. How many pencils did I start with?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 36$
__ pencils

Question 12.
GO DEEPER
Sarah has 8 fewer flowers than Ann. Ann has 16 flowers. How many flowers does Sarah have?
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 500$

Question 13.
THINK SMARTER
Look at the facts.
Write the missing number in each fact
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 37$

TAKE HOME ACTIVITY
• Write 5 + 4 = and ask your child to write the sum. Have him or her explain how to use 5 + 4 = 9 to solve __ – 4 = 5 and then write the answer.

Think Addition to Subtract Homework & Practice 4.2

Use $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 38$ to add and to subtract.

Question 1.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 39$

Question 2.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 40$

Question 3.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 41$

Problem Solving

Question 4.
Write a number sentence to solve. I have 18 pieces of fruit. 9 are apples. The rest are oranges. How many are oranges
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 42$
__ oranges

Question 5.
WRITE Math
Use pictures or words to explain how you can use 2 + __ = 7 to solve 7 – 2 = __
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 43$

Lesson Check

Question 1.
Use the sum of 7 + 9 to solve 16 − 9.
7 + 9 = __ 16 – 9 = __

Question 2.
What is the missing number?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 44$

Spiral Review

Question 3.
Use $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 45$ to model the 3 addends. Write the sum.
4 + 4 + 6 = __

Question 4.
Draw a picture to show your work. Write the number. There are 5 birds. 3 birds fly away. How many birds are there now?
__ birds

Lesson 4.3 Use Think Addition to Subtract

Essential Question
How can you use addition to help you find the answer to a subtraction fact?

Listen and Draw

Use $Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 45.1$ . Draw to show your work. Write the number sentences.
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 46$

Model and Draw

An addition fact can help you subtract.
What is 8 − 6?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 47$

Share and Show MATH BOARD

Think of an addition fact to help you subtract

Question 1.
What is 9 − 6?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 48$

Question 2.
What is 11 − 5?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 49$

Question 3.
What is 10 − 8?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 50$

Question 4.
What is 7 − 4?
$Go Math Grade 1 Answer Key Chapter 4 Subtraction Strategies 51$

On Your Own

MATHEMATICAL PRACTICE
Analyze
Think of an addition fact to help you subtract.

Question 5.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 52$

Question 6.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 53$

Question 7.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 54$

Question 8.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 55$

Question 9.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 56$

Question 10.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 57$

Question 11.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 58$

Question 12.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 59$

Question 13.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 60$

Question 14.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 61$

Question 15.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 62$

Question 16.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 63$

Question 17.
THINK SMARTER
Emil has 13 pencils in a cup. He takes some pencils out. There are 6 pencils left in the cup. How many pencils does he take out?
What addition fact can you use to solve this problem?
__ + __ = ___
So, Emil takes out __ pencils.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 64$

TAKE HOME ACTIVITY
• Ask your child to explain how the addition fact 8 + 6 = 14 can help him or her to find 14 − 6.

Use Think Addition to Subtract Homework & Practice 4.3

Think of an addition fact to help you subtract.

Question 1.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 65$

Question 2.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 66$

Question 3.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 67$

Question 4.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 68$

Question 5.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 69$

Question 6.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 70$

Question 7.
$Go Math Answer Key Grade 1 Chapter 4 Subtraction Strategies 71$

Problem Solving

Question 8.
Solve. Draw or write to show your work. I have 15 stamps. Some are old. 6 are new. How many stamps are old?
__ stamps

Question 9.
WRITE Math
Use pictures or words to explain how you can use addition to solve 14 – 9.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 72$

Lesson Check

Question 1.
Use 9 + __ = 13 to find the difference.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 73$

Question 2.
Use 8 + __ = 11 to find the difference.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 74$

Spiral Review

Question 3.
Add. Write the doubles fact you used to solve the problem.
4 + 5 = __
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 75$

Question 4.
Circle the greater addend. Count on to find the sum.
7 + 2 = __

Subtraction Strategies Mid-Chapter Checkpoint

Concepts and Skills

Count back 1, 2, or 3 to subtract. Write the difference.

Question 1.
7 – 1 = __

Question 2.
__ = 7 – 2

Question 3.
12 – 3 = __

Question 4.
9 – 3 = __

Question 5.
6 – 2 = __

Question 6.
8 – 3 = __

Question 7.
__ = 11 – 3

Question 8.
5 – 2 = __

Use $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 76$ to add and to subtract.

Question 9.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 77$

Question 10.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 78$

Question 11.
THINK SMARTER
Write a subtraction sentence you can solve by using 3 + 9 = 12.
__ – __ = ___

Lesson 4.4 Use 10 to Subtract

Essential Question
How can you make a ten to help you subtract?

Listen and Draw

Use $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 79$ to show the problem. Draw to show your work.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 80$

Math Talk
MATHEMATICAL PRACTICES
Represent How can your drawing help you solve 15 – 9?

Model and Draw

You can make a ten to help you subtract.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 81$

Share and Show MATH BOARD

Use $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 82$ and ten frames. Make a ten to subtract. Draw to show your work.

Question 1.
12 – 8 = ?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 83$
12 – 8 = __

Question 2.
11 – 9 = ?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 84$
11 – 9 = __

On Your Own

MATHEMATICAL PRACTICE
Use a Concrete Model

Use $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 85$ and ten frames. Make a ten to subtract. Draw to show your work.

Question 3.
14 – 9 = ?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 86$
14 – 9 = __

Question 4.
11 – 8 = ?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 87$
11 – 8 = __

Solve. Use the ten frames to make a ten to help you subtract.

Question 5.
There are 14 flowers in the garden. 9 are red. The rest are yellow. How many flowers are yellow?
— yellow flowers
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 88$

Problem Solving • Applications

Solve. Use the ten frames to make a ten to help you subtract.

Question 6.
GO DEEPER
Mia has 18 beads. 9 are red and the rest are yellow. How many beads are yellow?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 89$
__ yellow beads

Question 7.
THINK SMARTER
John had some stickers. He gave 9 to April. Then he had 7. How many stickers did John start with?
__ stickers
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 90$

Question 8.
THINK SMARTER
Which shows a way to make a ten to subtract?
17 – 8 = ?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 91$

TAKE HOME ACTIVITY
• Ask your child to explain how he or she solved Exercise 6.

Use 10 to Subtract Homework & Practice 4.4

Use $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 89.1$ and ten frames. Make a ten to subtract. Draw to show your work.

Question 1.
12 – 9 = ?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 92$
12 – 9 = __

Question 2.
12 – 8 = ?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 93$
12 – 8 = __

Problem Solving

Solve. Use the ten frames to make a ten to help you subtract.

Question 3.
Marta has 15 stickers. 8 are blue and the rest are red. How many stickers are red?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 94$
__ stickers

Question 4.
WRITE Math
Draw ten frames and counters to show how to solve 18 – 9 = __.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 95$

Lesson Check

Question 1.
Look at the model. Write the subtraction sentence that the model shows.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 96$
__ – __ = __

Spiral Review

Question 2.
What number sentence does this model show?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 97$

Question 3.
This ten frame shows 5 + 8. Draw to make ten. Then write the new fact.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 98$
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 99$

Lesson 4.5 Break Apart to Subtract

Essential Question
How do you break apart a number to subtract?

Listen and Draw

Use $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 100$ to solve each problem. Draw to show your work.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 100.1$

Math Talk
MATHEMATICAL PRACTICES
Reasoning How do you find how many markers Tom gave away? Explain.

Model and Draw

Think about ten to find 13 − 4.
Place 13 counters in two ten frames.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 101$

Share and Show MATH BOARD

Subtract.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 102$

Question 1.
What is 15 − 7?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 103$

On Your Own

MATHEMATICAL PRACTICE
Reason Quantitatively
Subtract.

Question 2.
GO DEEPER
What is 14 − 6?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 104$

Question 3.
What is 16 − 7?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 105$

Problem Solving • Applications WRITE Math

Use the ten frames.
Write a number sentence to solve.

Question 4.
THINK SMARTER
There are 14 sheep in the herd. 5 sheep run away. How many sheep are left in the herd?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 106$

Question 5.
THINK SMARTER
What subtraction sentence does the model show?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 107$

TAKE HOME ACTIVITY
• Ask your child to explain how he or she solved Exercise 4.

Break Apart to Subtract Homework & Practice 4.5

Subtract.

Question 1.
What is 13 − 5?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 108$

Problem Solving

Question 2.
There are 17 goats in the barn. 8 goats go outside. How many goats are still in the barn?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 109$

Question 3.
WRITE Math
Draw ten frames and counters to show how you would break apart a number to find 14 – 6.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 110$

Lesson Check

Question 1.
Show how to make a ten to find 12 − 4. Write the number sentence.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 111$
__ – __ – __ = __

Spiral Review

Question 2.
Use $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 112$ Color and draw to show a way to take apart 7. Complete the subtraction sentence.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 113$
7 – __ = __

Question 3.
Use doubles minus one to solve 8 + 7. Write the number sentence.
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 114$

Lesson 4.6 Problem Solving • Use Subtraction Strategies

Essential Question
How can acting out a problem help you solve the problem?

Kyle had 13 hats. He gave 5 hats to Jake. How many hats does Kyle have now?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 115$

Unlock the Problem

What do I need to find?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 116$
Kyle has now
What information do I need to use?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 117$

Show how to solve the problem.

$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 118$

HOME CONNECTION
• Your child used counters to act out the subtraction story. The graphic organizer helps your child analyze the information given in the problem.

Try Another Problem

Act it out to solve. Draw to show your work.

Question 1.
Heather has 14 crackers. Some crackers are broken. 8 crackers are not broken. How many crackers are broken?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 119$
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 120$
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 120.1$
__ crackers are broken.

Share and Show MATH BOARD

MATHEMATICAL PRACTICE
Analyze
Act it out to solve. Draw to show your work.

Question 2.
Phil had some stickers. He lost 7 stickers. Now he has 9 stickers. How many stickers did Phil start with?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 121$
Phil started with __ stickers.

Question 3.
Hillary has 9 dolls. Abby has 18 dolls. How many fewer dolls does Hillary have than Abby?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 122$
Hillary has __ fewer dolls

Question 4.
Josh had 12 seeds. He planted some in the dirt. He has 5 left. How many seeds did he plant in the dirt?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 123$
Josh planted __ seeds.

Question 5.
Cami has 13 apples. Some are green and some are red. She has 8 red apples. How many apples are green?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 124$
__ apples are green.

On Your Own WRITE Math

Choose a way to solve. Draw or write to explain.

Question 6.
THINK SMARTER
10 frogs are in the tree. 3 more frogs jump into the tree. Then 4 frogs jump out of the tree. How many frogs are in the tree now?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 125$

Question 7.
There are 9 more turtles in the water than on a log. 13 turtles are in the water. How many turtles are on a log?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 126$
__ turtles

Question 8.
GO DEEPER
Choose a number to fill in the blank. Solve. 10 dogs are at the park.
__ dogs are brown. The rest have black spots. How many dogs have black spots?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 127$
__ dogs

Question 9.
THINK SMARTER
Chris has 10 worms. He gives away some of his worms. He has 6 worms left. How many worms did Chris give away?
Chris gave away $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 128$ worms.

TAKE HOME ACTIVITY
• Tell your child a subtraction story. Ask your child to use small objects to act out the problem to solve it.

Problem Solving • Use Subtraction Strategies Homework & Practice 4.6

Act it out to solve. Draw to show your work.

Question 1.
There are 13 monkeys. 6 are small. The rest are big. How many monkeys are big?
13 – 6 = $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 128.1$
__ monkeys are big.

Question 2.
Mindy had 13 flowers. She gave some to Sarah. She has 9 left. How many flowers did she give to Sarah?
13 – $Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 129$ = 9
Mindy gave __ flowers to Sarah.

Question 3.
There are 5 more horses in the barn than outside. 12 horses are in the barn. How many horses are outside?
12 – 5 = $1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 130$
__ horses are outside.

Question 4.
WRITE Math
Use pictures or words to explain how you would act out the following problem. Joe has 9 toy cars. Dan has 6 toy cars. How many fewer toy cars does Dan have than Joe?
$Go Math 1st Grade Answer Key Chapter 4 Subtraction Strategies 131$

Lesson Check

Question 1.
Solve. Complete the number sentence. Jack has 14 oranges. He gives some away. He has 6 left. How many oranges did he give away?
14 – __ = 6
Jack gave away __ oranges.

Question 2.
Solve. Complete the number sentence. 13 pears are in a basket. Some are yellow and some are green. 5 pears are green. How many pears are yellow?
13 − 5 = __
__ pears are yellow.

Spiral Review

Question 3.
Draw a picture to solve. Rita has 4 plants. She gets 9 more plants. Then Rita gets 1 more plant. How many plants does she have now?
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 132$
__ plants.

Question 4.
What is the sum of 10 + 5?
__

Subtraction Strategies Chapter 4 Review/Test

Question 1.
Count back. Write the number that is 2 less.
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 133$

Question 2.
Look at the facts. A number is missing. Which number is missing?
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 134$

Question 3.
Write a subtraction sentence you can solve by using 5 + 4 = 9
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 135$

Question 4.
THINK SMARTER
Make a ten to subtract. Draw to show your work. Write the difference.
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 136$

Question 5.
What subtraction sentence does the model show?
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 137$

Question 6.
Lupe has 9 books. She gives some away. She has 7 left. How many books does she give away? Draw or write to explain.
Lupe gives away $1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 138$ books.

Question 7.
Look at the number sentences. What number is missing? Write the number in each box.
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 138.1$

Question 8.
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 139$ means “count back 1.”
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 140$ means “count back 2.”
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 141$ means “count back 3.”
Match each picture to a number sentence.
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 142$

Question 9.
Make a 10 to subtract.
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 143$

Question 10.
How does the model show 15 − 6? Choose the numbers that make the number sentences true. Circle numbers in the boxes.
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 144$

Question 11.
GO DEEPER
Mark has 11 $1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 145$ He gives some away. He has 4 left. How many $1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 146$ does he give away? Draw a picture to help you subtract.
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 147$
How is drawing like acting out a problem?
$1st Grade Go Math Answer Key Chapter 4 Subtraction Strategies 148$

Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000

December 31, 2020

Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 pdf formatted download links are provided here. Students of Grade 2 can take help from Big Ideas Math solutions for better preparation and score high marks in the exams. So, Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 is helpful and understandable by students. It includes each and every question with step by step explanation in a simple manner.

Big Ideas Math Book 2nd Grade Answer Key Chapter 7 Understand Place Value to 1,000

The topics included in this chapter are hundreds, Model Numbers to 1,000, Understand Place Value, Write Three-Digit Numbers, Represent Numbers in Different Ways. The topics are illustrated explicitly which addresses the toppers to learn quickly. Big Ideas Math Book 2nd Grade Answer Key Chapter 7 Understand Place Value to 1,000 Questions & Solutions are provided in a fundamental way that makes students not find any difficulty in learning & solving.

Understand Place Value to 1,000 Vocabulary

Lesson: 1 Hundreds

Lesson 7.1 Hundreds
Hundreds Homework & Practice 7.1

Lesson: 2 Model Numbers to 1,000

Lesson 7.2 Model Numbers to 1,000
Model Numbers to 1,000 Homework & Practice 7.2

Lesson: 3 Understand Place Value

Lesson 7.3 Understand Place Value
Understand Place Value Homework & Practice 7.3

Lesson: 4 Write Three-Digit Numbers

Lesson 7.4 Write Three-Digit Numbers
Three-Digit Numbers Homework & Practice 7.4

Lesson: 5 Represent Numbers in Different Ways

Lesson 7.5 Represent Numbers in Different Ways
Represent Numbers in Different Ways Homework & Practice 7.5

Understand Place Value to 1,000

Understand Place Value to 1,000 Performance Task
Understand Place Value to 1,000 Activity

Understand Place Value to 1,000 Vocabulary

$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 v 1$

Organize It
Use the review words to complete the graphic organizer.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 v 2$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-7-Understand-Place-Value-to-1000-v-2$

Explanation:
Tens Place: The first digit on the right of the decimal point means tenths.
Ones Place The ones place is just to the left of the decimal point.

Define It
Use your vocabulary cards to identify the word.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 v 3$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-7-Understand-Place-Value-to-1000-v-3$

$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 v 4$
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 v 5$

$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 v 6$
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 v 7$

Lesson 7.1 Hundreds

Explore and Grow
How many unit cubes and rods are in a flat?
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 1$
Answer: 100 cubes and 10 rods
Explanation
Given that, For counting cubes, should count all the rows and columns. By counting all the boxes there are
10 rows and 10 columns= 100 cubes To find out the rods count only the columns, by counting columns there are 10 rods.
Show and Grow
Write how many tens. Circle groups of 10 tens. Write how many hundreds. Then write the number.
Question 1.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 2$
______ tens
______ hundred
______
Answer: 20 tens & 2 hundred (200)
Explanation
Given that 20 tens are there by circling 10 tens
For counting tens, count columns and for counting hundreds count all the boxes.
Question 2.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 3$
______ tens
______ hundred
______
Answer: 40 tens & 4 hundred (400)
Explanation
Given that 40 tens are there by circling 10 tens
For counting tens, count columns and for counting hundreds count all the boxes.

Apply and Grow: Practice

Write how many tens. Circle groups of 10 tens. Write how many hundreds. Then write the number.
Question 3.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 4$
______ tens
______ hundred
______
Answer: 30 tens & 3 hundreds (300)
Explanation
Given that 30 tens are there by circling 10 tens
for counting tens, count columns and for counting hundreds count all the boxes.

Question 4.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 5$
______ tens
______ hundred
______
Answer: 60 tens & 6 hundreds
Explanation
Given that 60 tens are there by circling 10 tens.
for counting tens, count columns and for counting hundreds count all the boxes.

Question 5.
DIG DEEPER!
How many hundreds are in 700? How many tens?
_____ hundreds
______ tens
Answer: 7 hundreds are in 700 and 70 tens are in 700.
Explanation
there are 7 hundreds in 700 and 70 tens in 700. 10 tens gives 1 hundreds totally there are 70 tens is 700.

Question 6.
You have 80 bags of crayons. There are 10 crayons in each bag. How many crayons do you have in all?
_____ crayons
Answer: 800 crayons
Explanation
Given that, There are 80 bags of crayons each bags contains 10 crayons.10 x 80=800 ( 10 crayons in each bags x 80 totally bags = 800 )
Thus, There are 800 crayons do we have in all.

Think and Grow: Modeling Real Life

A store sells oranges in bags of 10. The store sells 500 oranges. How many bags do they sell?
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 6$
Make a quick sketch:
_____ bags
Answer: 50 bags
Explanation
Given that, The store sells 500 oranges each bags contains 10 oranges.10 X 50 = 500 (10 oranges in each bags x 50 bags = 500 oranges)
Thus, The store sell the 50 bags of oranges.

Question 7.
A store sells bottles of glitter glue in boxes of 10. The store sells 600 bottles. How many boxes do they sell?
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 7$
_____ boxes
Answer: 60 boxes
Explanation
Given that, The store sells 600 bottles of glitter glue each boxes contains 10 glitter glue bottles.
10 X 60 = 600 (10 bottle of glitter glue in each boxes x 60 boxes = 600 bottles of glitter glue)
Thus, The store sell the 60 boxes of glitter glue.

Question 8.
DIG DEEPER!
You have 10 packages of invitations. Each package has 10 invitations. You need 300 invitations. How many more packages do you need?
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 8$
_____ more packages
Answer: 30 packages
Explanation
Given that, There are 10 packages of invitations each packages has 10 invitations you needed 300 invitations
10 x 30 = 300 (10 invitations of packages x 30 packages = 300 invitations)
Thus, 30 packages of invitations are needed.

Hundreds Homework & Practice 7.1

Write how many tens. Circle groups of 10 tens. Write how many hundreds. Then write the number.
Question 1.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 9$
_____ tens
______ hundreds
______
Answer: 50 tens & 5 hundreds.
Explanation
Given that 50 tens are there by circling 10 tens
For counting tens, count columns and for counting hundreds count all the boxes.

Question 2.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 10$
_____ tens
______ hundreds
______
Answer: 80 tens & 8 hundreds
Explanation
Given that 80 tens are there by circling 10 tens
For counting tens, count columns and for counting hundreds count all the boxes.

Question 3.
Which One Doesn’t Belong?
Which does not belong with the other three?
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 11$
Answer: 70

Question 4.
Modeling Real Life
A class has 30 boxes of pencils. Each box has 10 pencils. The class needs 600 pencils. How many more boxes does the class need?
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 12$
______ boxes
Answer: 30 boxes
Explanation
Given that, the class has 30 boxes of pencils each boxes contains 10 pencils. The class needs 600 pencils.
10 x 60 (30 +30)=600 (10 Pencils in each boxes X 60 boxes (30 boxes which you have + 30 boxes of pencils you need)= 600 pencils)
Thus, the class needs another 30 boxes.

Question 5.
Modeling Real Life
You have 10 packages of cards. Each package has 10 cards. You need 200 cards. How many more packages do you need?
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 13$
______ more packages
Answer: 10 package
Explanation
Given that, 10 packages of cards each packages contains 10 cards, you need 200 cards
10 x 20= 200 (10 cards in each packages X 20 packages of cards (10 packages which you have+10 packages you needed) =200 cards)
Thus, you need another 10 packages of cards.

Review & Refresh

Question 6.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 14$
Answer: 99

Question 7.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.1 15$
Answer: 75

Lesson 7.2 Model Numbers to 1,000

Explore and Grow

Model the number. Make a quick sketch to match.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 1$
Answer:
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-7-Understand-Place-Value-to-1000-7.2-2$

Show and Grow

Question 1.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 2$
______ hundreds, _______ tens, and ______ ones is ______.
Answer: 7 hundreds, 4 tens and 5 ones is 745
Explanation
There are 7 unit of cubes each unit of cubes contains 10 tens which gives 700(10 tens in one unit of cubes x 70 tens in the whole unit of cubes = 700)
and there are 4 rod each contains 10 cubes that gives 4 tens is 40 and plus the ones 5 is 745.

Apply and Grow: Practice

Question 2.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 3$
______ hundreds, _______ tens, and ______ ones is ______.
Answer: 4 hundreds, 6 tens and 3 ones is 463.
Explanation
There are 4 unit of cubes each unit of cubes contains 10 tens which gives 400(10 tens in one unit of cubes x 40 tens in the whole unit of cubes = 400)
and there are 6 rod each contains 10 cubes that gives 6 tens is 60 and plus the ones 3 is 463.

Question 3.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 4$
______ hundreds, _______ tens, and ______ ones is ______.
Answer: 6 hundreds, 0 tens and 9 ones is 609.
Explanation
There are 6 unit of cubes each unit of cubes contains 10 tens which gives 600(10 tens in one unit of cubes x 70 tens in the whole unit of cubes = 700)
The place value of 0 (0 x 10 tens = 0) and plus the ones 9 is 609.

Question 4.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 5$
______ hundreds, _______ tens, and ______ ones is ______.
Answer: 3 hundreds, 4 tens and 6 ones is 346.
Explanation
There are 3 unit of cubes each unit of cubes contains 10 tens which gives 300(10 tens in one unit of cubes x 30 tens in the whole unit of cubes = 300)
and there are 4 rod each contains 10 cubes that gives 4 tens is 40 and plus the ones 6 is 346.

Question 5.
DIG DEEPER!
What number is Newton thinking about?
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 6$
Answer:58

Think and Grow: Modeling Real Life

You buy the markers shown. How many markers do you buy?
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 7$
Write the missing numbers:
_______ hundreds, _______ tens, and ______ ones
_______ markers
Answer: 3 hundreds, 2 tens and 4 ones is 324 markers.
Explanation
The above images shows that 3 packs of 100 markers(100+100+100=300) 2 packs of 10 markers(10+10=20) with additional of 4 markers, that gives
(300+20+4=324)Totally 324 markers you buy.

Show and Grow

Question 6.
You buy the balloons shown. How many balloons do you buy?
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 8$
______ balloons
Answer: 570 balloons
Explanation
The above images shows that 5 packs of 100 balloons(100+100+100+100+100= 500) 7 packs of 10 balloons(10+10+10+10+10+10+10=70),
that gives ( 500+70=570)Totally 570 balloons you buy.

Model Numbers to 1,000 Homework & Practice 7.2

Question 1.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 9$
______ hundreds, _______ tens, and ______ ones is ______.
Answer: 4 hundreds,7 tens 2 ones is 472
Explanation
There are 4 unit of cubes each unit of cubes contains 10 tens which gives 400(10 tens x 40 tens of whole cubes =400)
There are 7 rod gives you a 7 tens is 70 and plus 2 ones is 472.

Question 2.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 10$
______ hundreds, _______ tens, and ______ ones is ______.
Answer: 7 hundreds 4 tens 0 ones is 740.
Explanation
There are 7 unit of cubes each unit of cubes contains 10 tens which gives 700(10 tens in one unit of cubes x 70 tens in the whole unit of cubes = 700)
and there are 4 rod each contains 10 cubes that gives 4 tens is 40 and plus the ones place above picture there were no ones 0 is 740

Question 3.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 11$
______ hundreds, _______ tens, and ______ ones is ______.
Answer: 2 hundreds 8 tens and 6 ones is 286.
Explanation
There are 2 unit of cubes each unit of cubes contains 10 tens which gives you 200 (10 tens in one unit of cubes x 20 tens in the whole unit of cubes = 200) and there are 8 rod each contains 10 cubes that gives 8 tens is 80 and plus the ones 6 is 286.

Question 4.
YOU BE THE TEACHER
Your friend writes 8 hundreds and 3 ones as 83. Is your friend correct? Explain.
_________________________
_________________________
Answer: No, 8 is tens and 3 is ones as 83.
Explanation
The first digit is the tens place it tells you that there are 8 tens in the number 83. The next digit is the ones place which is 3.
Therefore there are 8 sets of 10 tens and plus 3 ones in the number 83.

Question 5.
Modeling Real Life
You buy the stickers shown. How many stickers do you buy?
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 12$
______ stickers
Answer: 620 stickers
Explanation
Given that, There are 6 packs of stickers each contains 100 stickers that is (100+100+100+100+100+100=600
and 2 packs of stickers each contains 10 stickers that is (10+10= 20) Therefore 600 +20= 620
Thus, 620 sticker you buy.

Review & Refresh

Question 6.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 13$
Answer: 82

Question 7.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 14$
Answer: 83

Question 8.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 7.2 15$
Answer: 71

Lesson 7.3 Understand Place Value

Explore and Grow

Make quick sketches to model each number.
$Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 7.3 1$
What do you notice about the numbers?
_________________________
_________________________
Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-7-Understand-Place-Value-to-1000-7.3-1$

Show and Grow

Circle the value of the underlined digit.
Question 1.
483
300
30
3
Answer: 3
Explanation
Given that there are 3 digit number which is 483. A number can have many digits and each
digit has a special place and value. the 8 is in ones place and its place value is 8.

Question 2.
791
9 hundreds
9 tens
9 ones
Answer: 9 tens
Explanation
Given that there are 3 digit number which is 791. A number can have many digits and each
digit has a special place and value. the second digit at tens place. The 9 is in tens place value is 90.
Question 3.
612
6
60
600
Answer: 600
Explanation
Given that there are 3 digit number which is 612. A number can have many digits and each
digit has a special place and value. the first digit at hundreds place. The 6 is in hundreds place value is 600.

Question 4.
578
7 hundreds
7 tens
7 ones
Answer: 7 tens
Explanation
Given that there are 3 digit number which is 578. A number can have many digits and each
digit has a special place and value. the second digit at tens place. The 7 is in tens place value is 70.

Apply and Grow: Practice

Circle the value of the underlined digit.
Question 5.
354
300
30
3
Answer: 300
Explanation
Given that there are 3 digit number which is 354. A number can have many digits and each
digit has a special place and value. the first digit at hundreds place. The 3 is in hundreds place value is 300.

Question 6.
726
2 hundreds
2 tens
2 ones
Answer: 2 tens
Explanation
Given that there are 3 digit number which is 726. A number can have many digits and each
digit has a special place and value. the second digit at tens place. The 2 is in tens place value is 20.

Question 7.
594
4
40
400
Answer: 4
Explanation
Given that there are 3 digit number which is 594. A number can have many digits and each
digit has a special place and value. the 4 is in ones place and its place value is 4.

Question 8.
475
5 hundreds
50
5 ones
Answer: 5 ones
Explanation
Given that there are 3 digit number which is 475. A number can have many digits and each
digit has a special place and value. the 5 is in ones place and its place value is 5.

Circle the values of the underlined digit.
Question 9.
639
3 tens
300
30
Answer: 3 tens
Explanation
Given that there are 3 digit number which is 639. A number can have many digits and each
digit has a special place and value. the second digit at tens place. The 3 is in tens place value is 30.

Question 10.
872
8 hundreds
80
800
Answer: 8 hundreds
Explanation
Given that there are 3 digit number which is 872. A number can have many digits and each
digit has a special place and value. the first digit at hundreds place. The 8 is in hundreds place value is 800.

Question 11.
Number Sense
Write the number that has the following values.
The tens digit has a value of 40.
The ones digit has a value of 2.
The hundreds digit has a value of 600. ______
Answer: 642
Explanation
The combination of hundreds, tens, ones of 600, 40, 2 respectively.

Think and Grow: Modeling Real Life

How many points is one ball worth in each bucket?
$Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 7.3 2$
Write the score:
______ hundreds, ______ tens, and _______ ones
Blue bucket: ______ points
Yellow bucket: _____ point
Red bucket: ______ points
Answer: Blue bucket 3 points,yellow bucket 4 points and red bucket 5 points

Show and Grow

Question 12.
How many points is one ring worth on each peg?
$Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 7.3 3$
Green peg: ______ points
Blue peg: _______ point
Purple peg: ______ points
Answer:
Green peg: 1 points
Blue peg: 3 point
Purple peg: 2 points

Understand Place Value Homework & Practice 7.3

Circle the value of the underlined digit.
Question 1.
523
500
50
5
Answer: 500
Explanation
Given that there are 3 digit number which is 523. A number can have many digits and each
digit has a special place and value. the first digit at hundreds place. The 5 is in hundreds place value is 500.

Question 2.
738
8 hundreds
8 ones
8 tens
Answer: 8 ones
Explanation
Given that there are 3 digit number which is 738. A number can have many digits and each
digit has a special place and value. the 8 is in ones place and its place value is 8.

Question 3.
364
60
6 ones
6 hundreds
Answer: 60
Explanation
Given that there are 3 digit number which is 364. A number can have many digits and each
digit has a special place and value. the second digit at tens place. The 6 is in tens place value is 60.

Circle the values of the underlined digit.
Question 4.
434
4
4 ones
4 hundreds
Answer: 4 ones
Explanation
Given that there are 3 digit number which is 434. A number can have many digits and each
digit has a special place and value. the 4 is in ones place and its place value is 4.

Question 5.
920
2
2 tens
20
Answer: 2 tens
Explanation
Given that there are 3 digit number which is 920. A number can have many digits and each
digit has a special place and value. the second digit at tens place. The 2 is in tens place value is 20.

Question 6.
DIG DEEPER!
Write the number that matches the clues.
The value of the hundreds digit is 800.
The value of the tens digit is 10 less than 70.
The value of the ones digit is an even number greater than 7.
_________
Answer:
i. 8
80
8

Question 7.
Structure
Write each number in the correct circle.
$Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 7.3 4$
Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-7-Understand-Place-Value-to-1000-7.3-4$

Question 8.
Modeling Real Life
How many points is one ball worth in each hoop?
$Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 7.3 5$
Blue hoop: ______ points
Orange hoop: _______ points
Red hoop: _______ point
Answer:
Blue hoop: 4 points
Orange hoop: 2 points
Red hoop: 5 points

Review & Refresh

Question 9.
$Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 7.3 6$
Answer: 19

Question 10.
$Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 7.3 7$
Answer: 42

Question 11.
$Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 7.3 8$
Answer: 38

Lesson 7.4 Write Three-Digit Numbers

Explore and Grow

Identify the value of the base ten blocks.
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 1$
What is the total value of the base ten blocks? ________

How can you write the value of the base ten blocks as an equation?
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 2$
Answer:
Standard Form is 246
Expanded Form is 200 + 40 + 6 = 246
Word Form is Two Hundred and Forty Six

Show and Grow

Write the number in standard form, expanded form, and word form.
Question 1.
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 3$
Answer: Standard form 528,
Expanded form 500+20+8,
Word form Five Hundred Twenty Eight.

Question 2.
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 4$
Answer: Standard form 709,
Expanded form 700+9,
Word form Seven Hundred Nine.

Apply and Grow: Practice

Write the number in expanded form and word form.
Question 3.
837
_____ + _____ + _____
______________
Answer: 800+30+7 and Eight hundred thirty seven
Explanation
In expanded form, write the number by showing the value of each digit (800+30+7)
In Word form write the number by using words but no numbers (Eight hundred thirty seven)
Question 4.
954
_____ + _____ + ______
_____________
Answer:900+50+4 and Nine hundred fifty four
Explanation
In expanded form, write the number by showing the value of each digit (900+50+4)
In Word form write the number by using words but no numbers ( Nine hundred fifty four)
Write the number in standard form and word form.
Question 5.
500 + 60
______
__________
Answer: 560 and Five hundred sixty
Explanation
In standard form, numbers are written using only numbers. There are no words (560)
In Word form write the number by using words but no numbers ( Nine hundred fifty four)
Question 6.
700 + 20 + 1
_____
____________
Answer:721 and Seven hundred twenty one
Explanation
In standard form, numbers are written using only numbers. There are no words (721)
In Word form write the number by using words but no numbers ( Seven hundred twenty one)

Write the number in expanded form and standard form.
Question 7.
six hundred seventy-four
_____ + ______ + ______
__________
Answer: 600+70+4 and 674
Explanation
In expanded form, write the number by showing the value of each digit (600+70+4)
In standard form, numbers are written using only numbers. There are no words (674)
Question 8.
four hundred seven
_____ + ______ + ______
__________
Answer: 400+7 and 407
Explanation
In expanded form, write the number by showing the value of each digit (400+7)
In standard form, numbers are written using only numbers. There are no words (407)
Question 9.
Structure
Which number did Newton model?
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 5$

Think and Grow: Modeling Real Life

There are 819 pets in a pet store. 800 are fish. 9 are cats. The rest are birds. How many birds are there?
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 6$
Expanded form:
_____ + _____ + ______
_____ birds
Answer: 10 birds are there and 800+10+9
Explanation
Given that, There are 819 pets in pets store
800 are fish, 9 are cats and rest are birds.
Thus,819 the right the first digit will be at ones place 9 is in ones place and its place value is 9 ,the second digit at tens place 1 is in tens place its place value is 10 and the third digit at hundreds place.8 is in hundreds place its place value is 800.

Show and Grow

Question 10.
There are 21
7 flowers at a flower stand. 200 are roses. 7 are sunflowers. The rest are tulips. How many tulips are there?
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 7$
______ tulips
Answer: 10 are tulips in flower stand.
Explanation
Given that, There are 217 flowers in flowers stand
200 are roses, 7 are sunflowers and rest are tulips (200 – 7 = 10)
Thus,10 are the tulips.
Question 11.
There are 185 books at a book fair. 80 are chapter books. 5 are comic books. The rest are picture books. How many picture books are there?
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 8$
______ picture books
Answer: 100 books are picture books.
Explanation
Given that, 185 books are at book fair.
80 books are chapter books and 5 are comic books and rest books are picture books
(80 – 5 = 100)
Thus, 100 books are picture books in book fair.
Question 12.
You sell 326 candles. You sell 6 small candles. You sell 20 medium candles. The rest are large candles. How many large candles did you sell?
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 9$
______ large candles
Answer: 300 are large candles
Explanation:
Given that, 326 candles are sell by you,
6 are small candles and 20 are medium candles and rest are large candles
326-6(small candles)=320
320-20(medium candles)=300
Thus,300 large candles are you sell.
Three-Digit Numbers Homework & Practice 7.4

Write the number in expanded form and word form.
Question 1.
137
______ + _____ + _____
____________
Answer: 100+30+7 and One hundred thirty seven.
Explanation:
In expanded form, write the number by showing the value of each digit (100+30+7)
In Word form write the number by using words but no numbers ( One hundred twenty four)
Question 2.
280
_____ + _____ + ______
___________
Answer: 200+80 and Two hundred eighty
Explanation
In expanded form, write the number by showing the value of each digit (200+80)
In Word form write the number by using words but no numbers ( Two hundred eighty )
Write the number in standard form and word form.
Question 3.
600 + 10 + 5 ______
___________
Answer: 615 and Six hundred fifteen
Explanation
In standard form, numbers are written using only numbers. There are no words (615)
In Word form write the number by using words but no numbers ( Six hundred fifteen )
Question 4.
900 + 70 + 6 _____
___________
Answer: 976 and Nine hundred seventy six
In standard form, numbers are written using only numbers. There are no words (976)
In Word form write the number by using words but no numbers ( Nine hundred seventy six )
Write the number in expanded form and standard form.
Question 5.
three hundred nine
_____ + ______ + _____
______
Answer: 300+9 and 309
Explanation
In expanded form, write the number by showing the value of each digit (300+9)
In standard form, numbers are written using only numbers. There are no words (309)
Question 6.
eight hundred sixty-two
_____ + ______ + ______
_______
Answer: 800+60+2 and 862
Explanation
In expanded form, write the number by showing the value of each digit (800+60+2)
In standard form, numbers are written using only numbers. There are no words (862))
Question 7.
Which One Doesn’t Belong?
Which does not belong with the other three?
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 10$
Answer: 1 + 9 + 6 does not belong to the other three.

Question 8.
DIG DEEPER!
A number has 7 hundreds. The tens digit is 5 less than the hundreds digit. The ones digit is 2 more than the hundreds digit. What is the number?
______
Answer: 729
Explanation
given that, a number has 7 hundred
The tens digit is 5 less than hundreds digit

Question 9.
Modeling Real Life
There are 438 vegetables planted. 400 are carrots. 8 are beets. The rest are onions. How many onions are there?
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 11$
______ onions
Answer: 30 onions are there
Explanation
As per the statement, There are 438 vegetables are planted
400 are carrot (438-400=38)
8 are beets (38 – 8=30)
Thus, the Remaining 30 are onions.

Question 10.
Modeling Real Life
There are 593 students in after-school programs. 3 students take dance class. 90 students take art class. The rest take karate class. How many students take karate class?
$Big Ideas Math Solutions Grade 2 Chapter 7 Understand Place Value to 1,000 7.4 12$
______ students
Answer: 500 students are in karate class.
Explanation:
As per statements, Totally there are 593 students
3 students are in dance class (593-3=590)
90 students are in art class (590-90=500)
Thus, the Remaining 500 students are in karate class.

Review & Refresh

Question 11.
Find the sum. Then change the order of the addends. Write the new equation.
4 + 7 = ______
_____ + _____ = ______
Answer: 11

Lesson 7.5 Represent Numbers in Different Ways

Explore and Grow

Circle the models that show each number.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 1$
Answer:

Show and Grow

Question 1.
Show 261 two ways.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 2$
Answer:

Question 2.
Show 345 two ways.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 3$
Answer:

Apply and Grow: Practice

Question 3.
Show 432 two ways.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 4$
Answer:

Question 4.
Show 527 two ways.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 5$
Answer:

Question 5.
YOU BE THE TEACHER
Your friend says that 800 + 40 + 11 is the same as 800 + 50 +1. Is your friend correct? Explain.
_________________________
__________________________
Answer:

Think and Grow: Modeling Real Life

The models show how many dinosaur toys you and your friend have. Does your friend have the same number of dinosaur toys as you? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 6$
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 7$
_________________________
__________________________
Answer:

Show and Grow

Question 6.
The models show how many trading cards you and your friend have. Does your friend have the same number of trading cards as you? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 8$
______________________
______________________
Answer:

Represent Numbers in Different Ways Homework & Practice 7.5

Question 1.
Show 134 two ways.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 9$
Answer:

Question 2.
Show 319 two ways.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 10$
Answer:

Question 3.
Number Sense
Which ways show 948?
8 hundreds, 4 tens, and 8 ones
9 hundreds, 4 tens, and 8 ones
8 hundreds, 4 tens, and 9 ones
8 hundreds, 14 tens, and 9 ones
94 tens and 8 ones
948 ones
Answer:

Question 4.
Modeling Real Life
The models show how many bouncy balls you and your friend have. Does your friend have the same number of bouncy balls as you? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 7 Understand Place Value to 1,000 7.5 11$
________________________
__________________________
Answer:

Review & Refresh

Question 5.
70 + 30 = ______
Answer: 100

Question 6.
53 + 19 = _____
Answer: 72

Question 7.
90 − 50 = _____
Answer: 40

Question 8.
64 − 40 = _______
Answer: 24

Understand Place Value to 1,000 Performance Task

You make trail mix using the sunflower seeds, almonds, and raisins shown.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 1$
Question 1.
How many sunflower seeds, almonds, and raisins do you use?
______ + _____ + _____
_____
Answer: 400+ 30+ 5 is equal to 435.
Explanation
Given that, 400 sunflower seeds, 30 almonds and 5 raisins for trail mix
thus, 400+30+5= 435

Question 2.
You add another bag of almonds and another bag of raisins to your trail mix. How many sunflower seeds, almonds, and raisins are there now?
_____ + _____ + _____
______
Answer: 400+40+10= 450
Explanation
Given that, 400 sunflower seeds, 30 of almonds add another bags of almonds is contains 10 totally 40 and 5 of raisins add another bags of raisins contains 5 totally 10 raisins.
400+40+10=450

Question 3.
Your friend makes trail mix with 3 bags of sunflower seeds,13 bags of almonds, and 4 bags of raisins. Does your friend use the same number of ingredients as you? Explain.
Yes No
__________________
___________________
Answer: No, friend makes a trail mix with only 3 bags of sunflower 13 bags of almonds and 4 bag of raisins. The ingredients you used is 400 sunflower seeds,40 almonds bags and 10 raisins bags. Friend and your’s are not the same ingredients.

Understand Place Value to 1,000 Activity

Naming Numbers Flip and Find
To Play: Place the Naming Numbers Flip and Find Cards face down in the boxes. Take turns flipping 2 cards. If your cards show the same number, keep the cards. If your cards show different numbers, ﬂip the cards back over. Play until all matches are made.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 2$

7.1 Hundreds

Write how many tens. Circle groups of 10 tens. Write how many hundreds. Then write the number.
Question 1.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 chp 1$
_____ tens
_______ hundreds
________
Answer: 40 tens and 4 hundreds
Explanation
Given that 40 tens are there by circling 10 tens
For counting tens, count columns and for counting hundreds count all the boxes.

Question 2.

$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 chp 2$
_____ tens
_______ hundreds
________
Answer: 50 tens and 5 hundred
Explanation
Given that 50 tens are there by circling 10 tens
For counting tens, count columns and for counting hundreds count all the boxes.

Question 3.

Modeling Real Life
A cafeteria has 80 bags of pretzels. Each bag has 10 pretzels. The cafeteria needs 900 pretzels. How many more bags does the cafeteria need?
______ more bags
Answer: 10 bags

Explanation:
Given that, the cafeteria has 80 bags of pretzels each bags contains 10 pretzels, cafeteria needs 900 pretzels,
10 bags x 10 pretzels =100
Thus 10 bags of pretzels needs for the cafeteria.

7.2 Model Numbers to 1,000

Question 4.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 chp 4$
______ hundreds, _____ tens, and _____ ones is ______.
Answer:5 hundreds 2 tens, 5 ones is 525.
Explanation
There are 5 unit of cubes each unit of cubes contains 10 tens which gives 500(10 tens in one unit of cubes x 50 tens in the whole unit of cubes = 500)
and there are 2 rod each contains 10 cubes that gives 2 tens is 20 and plus the ones 5 is 525.

Question 5.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 chp 5$
______ hundreds, _____ tens, and _____ ones is ______.
Answer: 8 hundred,0 tens, and 3 ones is 803.
Explanation
There are 8 unit of cubes each unit of cubes contains 10 tens which gives 800(10 tens in one unit of cubes x 80 tens in the whole unit of cubes = 800)
the second digit at tens place 0 in the tens place and the right first digit is ones plus the ones 3 is 803.

Question 6.
Number Sense
What number is Descartes thinking about?
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 chp 6$
______
Answer:425
Explanation
The above answer represents that 4 hundreds is 400 and the second digit at tens place. The 2 is in tens place value is
20 and the right first digit is in ones place the 5 is in ones place value 5 is 425.

7.3 Understand Place Value

Circle the value of the underlined digit
Question 7.
429
200
2
2 tens
Answer: 2 tens
Explanation
Given that there is 3 digit number which is 429. A number can have many digits and each
digit has a special place and value. the second digit at tens place. The 2 is in tens place value is 20.
Question 8.
751
70
700
7 tens
Answer: 700
Explanation
Given that there is 3 digit number which is 751. A number can have many digits and each
digit has a special place and value. the first digit at hundreds place. The 7 is in hundreds place value is 700

Question 9.
Number Sense
Write the number that has the following values.
The tens digit has a value of 60.
The ones digit has a value of 3.
The hundreds digit has a value of 900. _______
Answer:963
Explanation:
A number can have many digits and each digit has a special place and value. the first digit at hundreds place.
The 9 is in hundreds place value is 900. The second digit at tens place the 6 is in tens place value is 60 and
the right first digit is in ones place the 3 is in ones place value 3 is 963.

7.4 Write Three-Digit Numbers

Write the number in expanded form and word form.
Question 10.
605
_____ + _____ + ______
________
Answer: 600+5 and Six hundred five
Explanation
In expanded form, write the number by showing the value of each digit (600+05)
In Word form write the number by using words but no numbers ( Six hundred five)

Question 11.
541
______ + ______ + ______

___________
Answer: 500+40+1 and Five hundred forty-one
Explanation
In expanded form, write the number by showing the value of each digit (500+40+1)
In Word form write the number by using words but no numbers (Five hundred forty-one)

Write the number in standard form and word form.
Question 12.
100 + 20 + 4
______
___________
Answer: 124 and One hundred twenty-four
Explanation
In standard form, numbers are written using only numbers. There are no words (124)
In Word form write the number by using words but no numbers (One hundred twenty-four)

Question 13.
700 + 8
_______
_____________
Answer: 708 and Seven hundred eight
Explanation
In standard form, numbers are written using only numbers. There are no words (708)
In Word form write the number by using words but no numbers (Seven hundred eight)

Write the number in expanded form and standard form.
Question 14.
three hundred thirty
_____ + _____ + _____
_____
Answer: 300+30 and 330
Explanation
In expanded form, write the number by showing the value of each digit (300+30)
In standard form, numbers are written using only numbers. There are no words. (330)
Question 15.
two hundred fifty-six
_____ + ______ + _____
______
Answer: 200+50+6 and 256
Explanation
In expanded form, write the number by showing the value of each digit (200+50+6)
In standard form, numbers are written using only numbers. There are no words. (256)
7.5 Represent Numbers in Different Ways

Question 16.
Show 345 two ways.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 chp 16$
Answer: Three hundred forty-five and 300+40+5
Explanation
There are 3 digit number(345) 1 digit is for hundreds which is 3, 2nd digit is for tens which is 2 and the last digit for once 5 is 345
In word form for 345 is Three hundreds forty-five,
The expanded form for 345 is 300+40+5 which gives 345.

Question 17.
Show 562 two ways.
$Big Ideas Math Answers 2nd Grade Chapter 7 Understand Place Value to 1,000 chp 17$
Answer: Five hundred sixty-two and 500+60+2
Explanation
There are 3 digit numbers 1 digit number is hundreds which are 5, 2nd digit number is tens which is 6 tens and the last number 2 ones is 562
In word form for 562 is Five hundred sixty-two,
The expanded form for 562 is 500+60+2 is 562.

Question 18.
Your friend says that 600 + 30 + 1 is the same as 500 + 130 + 1. Is your friend correct? Explain.
___________________
___________________
Answer: Yes correct, given that 600+30+1= 631 ( which gives) and 500+130+1 = 631( which also gives the same answer)
both equation shows the same answers.

Conclusion:

The Download pdf of Big Ideas Math Answers Grade 2 Chapter 7 Understand Place Value to 1,000 is prepared by the math experts. So, don’t worry about the solutions Download the pdf link and kickstart your preparation for the exams. By using our material the students of 2nd Grade can score good marks in the exams.

Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths

December 31, 2020

To be proficient in math, you need to explain to yourself the meaning of a problem and give solutions. Students will know the tricks to solve the problems in a simple manner with the help of Big Ideas Math Book 2nd Grade Answer Key Chapter 11 Measure And Estimate Lengths. In order to help the 2nd-grade students, we have provided the answers in the pdf format. Download Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths pdf for free.

Big Ideas Math Book 2nd Grade Answer Key Chapter 11 Measure And Estimate Lengths

Check out the topics before you start your preparation for exams. Detailed Solutions provided make it easy for you to improve your knowledge and learn the concepts in depth. The solutions in this chapter are prepared by the math professionals. All you have to do is to click on the below attached links and go through the solutions.

Vocabulary

Measure And Estimate Lengths Vocabulary

Lesson: 1 Measure Lengths in Centimeters

Lesson 11.1 Measure Lengths in Centimeters
Measure Lengths in Centimeters Homework & Practice 11.1

Lesson: 2 Measure Objects Using Metric Length Units

Lesson 11.2 Measure Objects Using Metric Length Units
Measure Objects Using Metric Length Units Homework & Practice 11.2

Lesson: 3 Estimate Lengths in Metric Units

Lesson 11.3 Estimate Lengths in Metric Units
Estimate Lengths in Metric Units Homework & Practice 11.3

Lesson: 4 Measure Lengths in Inches

Lesson 11.4 Measure Lengths in Inches
Measure Lengths in Inches Homework & Practice 11.4

Lesson: 5 Measure Objects Using Customary Length Units

Lesson 11.5 Measure Objects Using Customary Length Units
Measure Objects Using Customary Length Units Homework & Practice 11.5

Lesson: 6 Estimate Lengths in Customary Units

Lesson 11.6 Estimate Lengths in Customary Units
Estimate Lengths in Customary Units Homework & Practice 11.6

Lesson: 7 Measure Objects Using Different Length Units

Lesson 11.7 Measure Objects Using Different Length Units
Measure Objects Using Different Length Units Homework & Practice 11.7

Lesson: 8 Measure and Compare Lengths

Lesson 11.8 Measure and Compare Lengths
Measure and Compare Lengths Homework & Practice 11.8

Chapter 11: Measure And Estimate Lengths

Measure And Estimate Lengths Activity
Measure And Estimate Lengths Chapter Practice

Measure And Estimate Lengths Vocabulary

$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths v 1$
Organize It
Use the review words to complete the graphic organizer.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths v 2$

Answer: Tree is measured bu Height and Bird is measured by Length

Define It
Use your vocabulary cards to match.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths v 3$

$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths v 4$
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths v 5$

$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths v 6$
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths v 7$

Lesson 11.1 Measure Lengths in Centimeters

Explore and Grow

Use a centimeter cube to find the length of each string.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 1$
Answer:

Explain how you measured.
______________________
______________________
______________________
Answer: The centimeters were measured by Scale.

Show and Grow

Measure.
Question 1.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 2$
about _______ centimeters
Answer: 1 centimeters

Question 2.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 3$
about ________ centimeters
Answer: 12 centimeters

Question 3.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 4$
about ______ centimeters
Answer: 20 centimeters

Apply and Grow: Practice

Measure.
Question 4.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 5$
about ______ centimeters
Answer: 15 centimeters

Question 5.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 6$
about ______ centimeters
Answer: 4 centimeters

Question 6.
Draw a pencil that is about 9 centimeters long.
Answer:
$Big Ideas Math Grade 2 Answers Chapter 11 img_1$

Question 7.
YOU BE THE TEACHER
Newton says the ribbon is about 14 centimeters long. Is he correct? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 7$
_______________________
_______________________
Answer: No. It is not correctly measured on a scale. It should be measured from 0 cm to 14 cms.

Think and Grow: Modeling Real Life

Will the hammer fit inside a toolbox that is 40 centimeters long? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 8$
______________________
______________________
Answer: The toolbox will be around 50 centimeters long, So the Hammer with 40 centimeters will fit in it.

Show and Grow

Question 8.
Will the sunglasses fit inside a case that is 10 centimeters long? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 9$
________________________
________________________
Answer: Yes, Sunglasses will fit inside the case that is 10 centimeters as Sunglasses will be around 9 centimeters.

Measure Lengths in Centimeters Homework & Practice 11.1

Measure.
Question 1.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 10$
about ______ centimeters
Answer: about 8 centimeters

Question 2.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 11$
about _______ centimeters
Answer: about 15 centimeters

Question 3.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 12$
about _______ centimeters
Answer: about 3 centimeters

Question 4.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 13$
about _______ centimeters
Answer: about 6 centimeters

Question 5.
Precision
Which crayon is shorter than 8 centimeters?
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 14$
Answer: Yellow and Green crayons are shorter than 8 centimeters.

Question 6.
Modeling Real Life
Will the pen fit inside a pouch that is 18 centimeters long? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 15$
______________________
_______________________
Answer: Yes the pen will fit inside a pouch that is 18 centimeters long as the pen is around 15 centimeters.

Review & Refresh

Question 7.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 16$
Answer: 55
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-11-Measure-And-Estimate-Lengths-11.1-0-Answer$

Question 8.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 17$
Answer: 90
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-11-Measure-And-Estimate-Lengths-11.1-01-Answer$

Question 9.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.1 18$
Answer: 101
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-11-Measure-And-Estimate-Lengths-11.1-02-Answer$

Lesson 11.2 Measure Objects Using Metric Length Units

Explore and Grow

Which real-life objects are shorter than a centimeter ruler?
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 1$
Answer:
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-11-Measure-And-Estimate-Lengths-11.2-1-Answer$

Show and Grow

Find and measure the object shown in your classroom.
Question 1.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 2$
about _______ meter
Answer: 3 meter

Question 2.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 3$
meter ______ centimeters
Answer: 3 centimeters

Question 3.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 4$
about _______ meters
Answer: 2 meter

Apply and Grow: Practice

Find and measure the object shown in your classroom.
Question 4.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 5$
about _______ meters
Answer: 3 meters

Question 5.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 6$
about ______ centimeters
Answer: 15 centimeters

Question 6.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 7$
about _______ meters
Answer: 2 meters

Question 7.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 8$
about ______ centimeters
Answer: 30 centimeters

Question 8.
Choose Tools
Would you measure the length of a bus with a centimeter ruler or a meter stick? Why?
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 9$
________________________
________________________
Answer: The length of a bus can be measured with a meter stick because the bus is big inside.
The centimeter-scale is small and the meter scale is big.

Think and Grow: Modeling Real Life

Your friend says a car has a length of about 4. Is the car about 4 meters long or about 4 centimeters long? Explain.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 10$
The car is about 4 ________ long.
________________________
________________________
Answer: The car is about 4 meters long.

Show and Grow

Question 9.
Your friend says a shoe has a length of about 12. Is the shoe about 12 centimeters long or about 12meters long? Explain.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 11$
The shoe is about 12 ____________ long.
______________________
______________________
Answer: The shoe is about 12 centimeters long.

Question 10.
DIG DEEPER!
Your friend places 2 of the same real objects end to end. Together, they have a length of about 18 centimeters. Which object did your friend use? Explain.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 12$
_________________________
_________________________
Answer: 1st and 2nd object together will be 18 centimeters. As 3rd object will be larger than 18 centimeters.

Measure Objects Using Metric Length Units Homework & Practice 11.2

Find and measure the object.
Question 1.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 13$
about ______ meters
Answer: 7 meters

Question 2.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 14$
about ______ centimeters
Answer: about 1000 centimeters

Question 3.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 15$
about ______ centimeters
Answer: 20 centimeters

Question 4.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 16$
about ______ meters
Answer: 3 meters

Question 5.
Number Sense
Complete the sentences using centimeters or meters.
A window is about 2 ________ long.
Answer: A window is about 2 meters long.
A finger is about 8 ______ long.
Answer: A finger is about 8 centimeters long.
A zucchini is about 12 _______ long.
Answer: A zucchini is about 12 centimeters long.
An airplane is about 20 _______ long.
Answer: An airplane is about 20 meters long.

Question 6.
Modeling Real Life
Your friend says that the length of a soccer field is about 91. Is the soccer field about 91 centimeters long or about 91 meters long? Explain.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 17$
The soccer field is about 91 _______ long.
______________________
_______________________
Answer: The soccer field is about 91 meters long.

Question 7.
DIG DEEPER!
Order the lengths from shortest to longest.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.2 18$
_________, _________, _________
Answer: 3 centimeters, 1 meter, 200 centimeter.

Review & Refresh

Question 8.
3 + 7 = _____ + 3
Answer: 7+3
The commutative property of addition says that changing the order of addends does not change the sum.
So, 3 + 7 = 7 + 3

Question 9.
5 + 4 = 4 + ______
Answer: 4+5
The commutative property of addition says that changing the order of addends does not change the sum.
So, 5 + 4 = 4 + 5

Question 10.
6 + 0 = ____ + 6
Answer: 0+6
The commutative property of addition says that changing the order of addends does not change the sum.
So, 6 + 0 = 0 + 6

Question 11.
1 + 2 = 2 + ____
Answer: 2+1
The commutative property of addition says that changing the order of addends does not change the sum.
So, 1 + 2 = 2 + 1

Lesson 11.3 Estimate Lengths in Metric Units

Explore and Grow

Find an object that is shorter than the string.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 1$
Without using a ruler, tell how long you think the object is.

Answer: Pencil
______ centimeters

Answer: 12 centimeters
Explain.
________________________
________________________
Answer: The Pencil is around 12 centimeters which is shorter than the 13 centimeters string.

Show and Grow

Question 1.
The chalk is about 8 centimeters long. What is the best estimate of the length of the toothpick?
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 2$
Answer: 6 centimeters

Question 2.
The fishing pole is about 1 meter long. What is the best estimate of the length of the alligator?
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 3$
Answer: 3 meters

Apply and Grow: Practice

Question 3.
The hover board is about 1 meter long. What is the best estimate of the length of the surfboard?
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 4$
Answer: 2 meters

Question 4.
The pineapple is about 25 centimeters long. What is the best estimate of the length of the asparagus?
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 5$
Answer: 20 centimeters

Question 5.
What is the best estimate of the length of a piece of notebook paper?
21 centimeters
1 meter
5 centimeters
Answer: 21 centimeters

Question 6.
What is the best estimate of the height of a traffic light?
1 meter
5 meter
30 centimeters
Answer: 5 meter

Question 7.
Precision
Match.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 6$
Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-11-Measure-And-Estimate-Lengths-11.3-6-Answer$

Think and Grow: Modeling Real Life

The leaf is about 8 centimeters long. Draw a tree branch that is about 16 centimeters long.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 7$
Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-11-Measure-And-Estimate-Lengths-11.1-Answer$

Show and Grow

Question 8.
The piece of celery is about 10 centimeters long. Draw a carrot that is about 5 centimeters long.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 8$
Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-11-Measure-And-Estimate-Lengths-11.3-8$

Question 9.
DIG DEEPER!
Each bead is about 2 centimeters long. Draw a rectangular bead that is about 3 centimeters long.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 9$
How did you use the length of the given beads to draw the rectangular bead?
________________________
__________________________
Answer:
The length of given rectangular beads were measured with scale.

Estimate Lengths in Metric Units Homework & Practice 11.3

Question 1.
The swimming pool is about 12 meters long. What is the best estimate of the length of the raft?
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 10$
Answer: 2 meters
Explanation: The length of the Swimming pool is 12 meters long, the raft length will be 2 meters as it is very small.

Question 2.
What is the best estimate of the height of a tulip?
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 11$
Answer: 4 meters
Explanation: The height of the tulip is big so, It can be estimated by 4 meters.

Question 3.
What is the best estimate of the height of a giraffe?
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 12$
Answer: 50 meters.
Explanation: The height of the giraffe is big so it can be estimated by 50 meters.

Question 4.
Logic
Newton says the best estimate for the height of a skyscraper is 4 meters. Do you agree? Explain.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 13$
_______________________
_______________________
Answer: No, The skyscraper’s estimated height is 150 meters.

Question 5.
Modeling Real Life
A granola bar is about 9 centimeters long. Draw its wrapper that is about 12 cm long.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 14$
Answer:
BIM Grade 2 Answer Key Chapter 2 img_2

Review & Refresh

Is the equation true or false?
Question 6.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 15$
Answer: True
Explanation: 13-5=8 and 15-7=8, they are equal.

Question 7.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 16$
Answer: False
3+6=9 and 11-3=8, They are not equal.

Question 8.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 17$
Answer: True
Explanation: 2+10=12 and 6+6=12

Question 9.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.3 18$
Answer: False
14-9=5 and 4+9=13

Lesson 11.4 Measure Lengths in Inches

Explore and Grow

Use an inch tile to find the length of each string.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 1$
Explain how you measured.
______________________
______________________
Answer: It is measured with inch scale.

Show and Grow

Measure.
Question 1.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 2$
about _______ inches
Answer: about 3 inches

Question 2.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 3$
about ______ inch
Answer: about 1 inch

Question 3.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 4$
about _______ inches
Answer: about 6 inches.

Apply and Grow: Practice

Measure.
Question 4.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 5$
about ______ inches
Answer: about 6 inches

Question 5.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 6$
about ______ inches
Answer: about 2 inches

Question 6.
Draw a crayon that is about 4 inches long.
Answer:

Question 7.
YOU BE THE TEACHER
Your friend says the watch is about 6 inches long. Is your friend correct? Explain.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 7$
Answer: It is 6 inches but it should be measured from 0 inch to 6 inches.

Think and Grow: Modeling Real Life

Will the toothbrush fit inside a case that is 4 inches long? Explain.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 8$
_________________________
_________________________
Answer: No
Explantion: It cannot be fit in 4 inches case because the toothbrush is about 8 inches long.

Show and Grow

Question 8.
Will the colored pencil fit inside a pencil box that is 8 inches long? Explain.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 9$
________________________
__________________________
Answer: Yes
Explanation: The colored pencil can be fit in pencil box as colored pencil will be about 5 inches long.

Measure Lengths in Inches Homework & Practice 11.4

Measure.
Question 1.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 10$
about _____ inch
Answer: About 2 inch.

Question 2.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 11$
about _______ inches
Answer: about 3 inches.

Question 3.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 12$
about _____ inches
Answer: about 6 inches.

Question 4.
YOU BE THE TEACHER
Newton says the highlighter is about 5 centimeters long. Is he correct? Explain.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 13$
______________________
_______________________
Answer: No, The highlighter will be about 11 centimeters long, So Newton is wrong as 5 centimeters is very small.

Question 5.
Modeling Real Life
Will the screwdriver fit inside a case that is 5 inches long? Explain.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 14$
____________________________
____________________________
Answer: Yes
Explanation: The screwdriver will be about 4.5 inches long so it will fit in 5 inches case.

Review & Refresh

Question 6.
Write how many tens. Circle groups of 10 tens. Write how many hundreds. Then write the number.
_____ tens ______ hundreds _____
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.4 15$
Answer: 50 tens 5 hundreds 500

Lesson 11.5 Measure Objects Using Customary Length Units

Explore and Grow

Which real-life objects are longer than an inch ruler?
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 1$
Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-11-Measure-And-Estimate-Lengths-11.5-1-Answer$

Show and Grow
Find the object shown in your classroom. Choose an inch ruler, a yardstick, or a measuring tape to measure the object. Then measure.
Question 1.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 2$
Tool: _______
Length: about _________
Answer: Tool: Inch ruler
Length: about 14 inches

Question 2.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 3$
Tool: _______
Length: about ________
Answer: Tool: Yardstick
Length: 2 meters

Question 3.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 4$
Tool: _______
Length: about _________
Answer: Toot: Measuring tape
Length: about 15 centimeters

Apply and Grow: Practice

Find the object shown in your classroom. Choose an inch ruler, a yardstick, or a measuring tape to measure the object. Then measure.
Question 4.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 5$
Tool: __________
Length: about ________
Answer: Tool: inch ruler
Length: about 3 inches

Question 5.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 6$
Tool: _________
Length: about ____________
Answer: Tool: measuring tape
Length: about 200 centimeters

Question 6.
Find and measure an object using a measuring tape.
Object: _________
Length: about __________
Answer: Object: Chair
Length: about 100 centimeters

Question 7.
Find and measure an object using an inch ruler.
Object: ________
Length: about _________
Answer: Object: Phone
Length: about 6 inches

Question 8.
Choose Tools
Would you measure the length of the playground with an inch ruler or a yardstick? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 7$
______________________
______________________
Answer: The length of the playground can be measured with a yardstick because the yardstick is long and it will be easy to measure long objects like length of playground.

Think and Grow: Modeling Real Life

Your friend says her height is about 4. Is she about 4 inches tall, about 4 feet tall, or about 4 yards tall? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 8$
She is about 4 ______ tall.
______________________
______________________
Answer: She is about 4 feet tall
Explanation: The height of a person is measured in feet.

Show and Grow

Question 9.
Your friend says the length of a baseball bat is about 1. Is the bat about 1 inch long, about 1 foot long, or about 1 yard long? Explain.
________ long.
_________________________
_________________________
Answer: 1 foot long
Explanation: The length a baseball bat is 1 foot long.

Question 10.
Your friend says the length around an orange is about 9. Is the length about 9 inches long, about 9 feet long, or about 9 yards long? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 9$
The length is about 9 ________ long.
________________________
_________________________
Answer: The length is about 9 inches long.
Explanation: The orange is small object so it can be measured in inches.

Measure Objects Using Customary Length Units Homework & Practice 11.5

Find the object shown. Choose an inch ruler, a yardstick, or a measuring tape to measure the object. Then measure.
Question 1.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 10$
Tool: ______
Length: about _______
Answer:

Question 2.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 11$
Tool: _______
Length: about ____________
Answer: Object: Basket
Tool: Measuring tape
Length: about 60 centimeters

Question 3.
Find and measure an object using an inch ruler.
Object: _________
Length: about __________
Answer: Object: Pencil
Length: about 8 inches

Question 4.
Find and measure an object using a yard stick.
Object: ____________
Length: about __________
Answer:Object: Door
Length: about 3 meter

Question 5.
YOU BE THE TEACHER
Descartes says the best tool to measure the length around a basketball is an inch ruler. Is he correct? Explain.
________________________
________________________
Answer: No
Explanation: The length of the basketball cannot be measured with inch ruler, it can be measured with measuring tape.

Question 6.
Modeling Real Life
Your friend says that the length of a toothbrush is about 8. Is the toothbrush about 8 inches, about 8 feet, or about 8 yards long? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 12$
The toothbrush is about 8 _______ long.
________________________
________________________
Answer: The toothbrush is about 8 inches long
Explanation: The toothbrush is small object so it can be measured with inch ruler.

Question 7.
DIG DEEPER!
Order the lengths from shortest to longest.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 11.5 13$
Answer: 2 feet 1 yard 39 inches
Explanation: 1 feet=12 inches, 12+12=24 inches
1 yard=36 inches

Review & Refresh

Question 8.
You read for 55 minutes. Your friend reads 28 fewer minutes. How many minutes does your friend read?
_____ minutes
Answer: 27 minutes

Explanation:
Given,
You read for 55 minutes. Your friend reads 28 fewer minutes.
28 – 55 = 27
Thus your friend read for 27 minutes

Question 9.
You score 23 points. Your two friends score 56 and 18 points. How many points do you and your friends score in all?
______ points
Answer: 97 points

Explanation:
Given,
You score 23 points. Your two friends score 56 and 18 points.
23 + 56 + 18 = 97 points
Thus you and your friend score 97 points in all/

Lesson 11.6 Estimate Lengths in Customary Units

Explore and Grow

Find an object that is shorter than the string. Draw the object.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 1$
Without using a ruler, tell how long you think the object is.
______ inches
Explain
____________________________
____________________________
Answer: Crayon, 4 inches
Explanation: The crayon is about 4 inches and it is shorter than 5 inches string.

Show and Grow

Question 1.
The pipe cleaner is about 3 inches long. What is the best estimate of the length of the craft stick?
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 2$
Answer: The length of craft stick is 4 inches.

Question 2.
The dog leash is about 5 feet long. What is the best estimate of the length of the dog collar?
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 3$
Answer: The length of the dog collar is about 1 foot.

Apply and Grow: Practice

Question 3.
The poster is about 18 inches long. What is the best estimate for the length of the bed?
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 4$
Answer: The length of bed is about 75 inches.

Question 4.
The jump rope is about 6 feet long. What is the best estimate of the length of the dog?
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 5$
Answer: The length of the dog is about 4 feet.

Question 5.
What is the best estimate of the length of a garage?
8 inches
8 feet
8 yards
Answer: The length of a garage is about 8 yards.

Question 6.
What is the best estimate of the height of a flag pole?
20 inches
20 feet
20 yards
Answer: The height of a flag pole is about 20 yards.

Question 7.
Precision
Match
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 6$
Answer:
Convert from feet and yards to inches.
1 feet = 12 inches
5 feet = 60 inches
1 yard = 36 inches
5 yard = 180 inches

Think and Grow: Modeling Real Life

The sticker is about 1 inch long. Draw another sticker that is about 2 inches long.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 7$
Answer:
$Big Ideas Math Grade 2 Chapter 11 Answer Key img_3$

Show and Grow

Question 8.
The worm is about 4 inches long. Draw a caterpillar that is about 2 inches long.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 8$
Answer:
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-11-Measure-And-Estimate-Lengths-11.6-8$

Question 9.
DIG DEEPER!
Each toy truck is about 2 inches long. Draw a building block that is about 3 inches long.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 9$
How did you use the length of the toy trucks to draw the building block?
__________________________
____________________________
Answer: You can expand the length of the toy trucks to draw the building block.

Estimate Lengths in Customary Units Homework & Practice 11.6

Question 1.
The driveway is about 20 yards long. What is the best estimate of the length of the truck?
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 10$
Answer: The length of the truck is about 15 yards.

Question 2.
What is the best estimate of the height of a basketball hoop?
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 11$
Answer: The height of the basket hoop is about 3 yards.

Question 3.
What is the best estimate of the length of a hair brush?
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 12$
Answer: The length of a hair brush is about 8 inches.

Question 4.
Logic
Descartes says the best estimate for the height of the Statue of Liberty is 5 yards. Do you agree? Explain.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 13$
_______________________
_______________________
Answer: No, The height of the Statue of Liberty is 5 yards.
Explanation: The height of the statue of liberty is very tall, it is about 100 yards.

Question 5.
Modeling Real Life
The bug is about 4 inches long. Draw a bug that is about 2 inches long.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 14$
Answer:
BIM Grade 2 Chapter 11 Answer Key img_4

Question 6.
DIG DEEPER!
Each paperclip is about 2 inches long. Draw a pen that is about 5 inches long.
$Big Ideas Math Answers 2nd Grade Chapter 11 Measure And Estimate Lengths 11.6 15$
Answer:

Review & Refresh

Question 7.
12 − 4 = ______
Answer: 8

Question 8.
15 − 6 = ________
Answer: 9

Lesson 11.7 Measure Objects Using Different Length Units

Explore and Grow

Measure the length of the string in inches then in centimeters.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 1$
______ inches _______ centimeters
Are there more inches or centimeters? Why?
_____________________________
______________________________
Answer: 4.72 inches 12 centimeters

Show and Grow

Find and measure the object shown in your classroom two ways.
Question 1.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 2$
about ______ centimeters
Answer: about 30 centimters
about ______ inches
about 15 inches
Did you use fewer centimeters or fewer inches to measure?
centimeters inches
Answer: inches

Question 2.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 3$
about _______ meters
about _______ feet
Did you use fewer meters or fewer feet to measure?
meters feet
Answer: about 2 meters
about 6 feet
meters.

Apply and Grow: Practice

Find and measure the object shown in your classroom two ways.
Question 3.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 4$
about _____ centimeters
about ______ inches
Did you use fewer centimeters or fewer inches to measure?
centimeters inches
Answer: about 2 centimeters
about 1 inch
inch

Question 4.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 5$
about _____ meters
about ______ feet
Did you use more meters or more feet to measure?
meters feet
Answer: about 3 meters
about 9 feet
feet

Question 5.
Would you use more centimeters, inches, or feet to measure the length of a calculator?
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 6$
Answer: Centimeters

Question 6.
Writing
What do you notice about the relationship between inches and centimeters? feet and meters?
________________________
_________________________
Answer: 1 inch is equal to 0.39 centimeters
1 foot is equal to 0.30 meters

Think and Grow: Modeling Real Life

Do you use fewer centimeters or fewer meters to measure the length of your house? Explain.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 7$
centimeters meters
__________________________
__________________________
Answer: Meters
Explanation: 1 meter is equal to 100 centimeter, The length of the house is big So, it is easy to measure with meter.

Show and Grow

Question 7.
Do you use fewer feet or fewer yards to measure the length of a football field? Explain.
feet yards
_________________________
_________________________
Answer: Yards.
1 yard=36 inches
1 feet= 12 inches
The length of the football field is big. So, it is measured with yards.

Question 8.
Do you use more meters or more feet to measure the length of your school? Explain.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 9$
meters feet
______________________
______________________
Answer: Feet
Explanation: 1 feet=12 inches
1 meter=39 inches
We use more feet to measure the length of the school.

Measure Objects Using Different Length Units Homework & Practice 11.7

Find and measure the object shown in two ways.
Question 1.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 10$
about _______ centimeters
about _____ inches
Did you use more centimeters or more inches to measure the length of the umbrella?
centimeters inches
Answer: about 100 centimeters
about 40 inches
We use more centimeters to measure the length of the umbrella.

Question 2.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 11$
about _____ meters
about _____ feet
Did you use fewer meters or fewer feet to measure the height of the cabinet?
meters feet
Answer: about 3 meters
about 10 feet
meter

Question 3.
Would you use more centimeters, inches, or feet to measure the height of a lamp?
centimeters
inches
feet
Answer: centimeters

Question 4.
Would you use fewer inches, meters, or feet to measure the length of a sink?
inches
meters
feet
Answer: Feet

Question 5.
Reasoning
Order the lengths from shortest to longest.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 12$
_______, ________, _________
Answer: 12 centimeter, 12 inches, 12 feet

Question 6.
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 13$
________, ________, ________
Answer: 2 centimeter, 2 feet, 2 meters

Question 7.
Precision
What is the best estimate of the height of a maraca?
$Big Ideas Math Answers Grade 2 Chapter 11 Measure And Estimate Lengths 11.7 14$
9 inches
10 centimeters
3 centimeters
Answer: 10 centimeters

Question 8.
Modeling Real Life
Do you use fewer feet or fewer yards to measure the length of a hallway? Explain.
______________________
______________________
Answer: fewer feet

Review & Refresh

Circle the values of the underlined digit.
Question 9.
634
4
4 ones
4 hundreds
Answer: 4 ones

Question 10.
918
900
9 hundreds
100
Answer: 9 hundreds

Question 11.
257
0
5 tens
50
Answer: 5 tens

Lesson 11.8 Measure and Compare Lengths

Explore and Grow

Measure the fish. Circle the longer fish.
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.8 1$
Answer: 10 centimeters

Show and Grow

Question 1.
How many centimeters longer is the marker than the paper clip?
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.8 2$
Answer: 10-4=6 centimeters.

Apply and Grow: Practice

Question 2.
How many centimeters shorter is the binder clip than the stick of gum?
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.8 3$
Answer: 4-1=3 inches

Question 3.
A finger is 4 centimeters longer than the finger nail. How long is the finger?
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.8 4$
_______ centimeters
Answer: 1 centimeters

Question 4.
Writing
Explain how you found the length of the finger in Exercise 3.
______________________
______________________
Answer:

Think and Grow: Modeling Real Life

Whose path to school is longer? How much longer is it?
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.8 5$
Addition equations:
Whose path is longer: Your path Friend’s path
Subtraction equation:
______ yards
Answer: Addition equations: your path 12+16=28 yards, your friend’s path 56+4=60 yards.
Whose path is longer: Your path Friend’s path
Subtraction equation: 60-28=32 yards

Show and Grow

Question 5.
Whose path to the pond is shorter? How much shorter is it?
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.8 6$
Your path Friend’s path
______ meters
Answer: your path: 6+28=34 meters, your friend’s path: 7+15=22 meters
Your friend’s path to the pond is shorter.
It is shorter than 12 meters.

Measure and Compare Lengths Homework & Practice 11.8

Question 1.
How many inches longer is the branch than the worm?
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.8 7$
Answer: 15 inches Branch
5 inches worm
15-5=10 inches

Question 2.
DIG DEEPER!
The length of a piece of string is 8 inches long. You cut off 5 inches. Draw the length of the string that is left.
Answer: _____________________________________________________________________________ – 8 inches
___________________________________________________ – 5 inches
8-5 inches=3 inches.

Question 3.
Modeling Real Life
Whose path to the playground is longer? How much longer is it?
$Big Ideas Math Solutions Grade 2 Chapter 11 Measure And Estimate Lengths 11.8 8$
Your path Friend’s path
_____ yards
Answer: Your path: 12+53=65 yards, Your friend’s path: 61+7=68 yards.
Your friend’s path is longer.
68-65=3 yards, It is longer by 3 yards.

Review & Refresh

Question 4.
Count by ones.
_____, _____, 71, _____, 73, _____, _____, 76
Answer: 69, 70, 71, 72, 73, 74, 75, 76
Explanation: There is difference of one number arranged in ascending order.

Question 5.
Count by fives.
85, 90, ____, _____, ______, _____, ______, ______
Answer: 85, 90, 95, 100, 105, 110, 115, 120.
Explanation: There is difference of five numbers arranged in ascending order.

Question 6.
Count by tens.
_____, 43, 53, _____, _____, ______, 93, ______
Answer: 33, 43, 53, 63, 73, 83, 93, 103.
Explanation: There is difference of ten numbers arranged in ascending order.

Measure And Estimate Lengths Performance Task

You are planting a rooftop garden. You want to build a fence around the garden. You have a piece of wood that is 16 feet long.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 1$
Question 1.
a. Which designs can you make?

$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 1$
b. You choose the rectangular design. Use repeated addition to find the length of each side in inches.
5 ft = _____ + ____ + ____ + _____ + _____ = in.
2 ft = ______ + ______ = in.
Answer: 5 ft =12 + 12 + 12 + 12 + 12= in
2 ft= 12 + 12 = in

Question 2.
Each seed you plant must be 6 inches apart and 6 inches away from the sides. Draw to find the number of seeds you can plant in your garden.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 3$
_____ seeds
Answer: 20 seeds

Measure And Estimate Lengths Activity

Spin and Cover
To Play: Players take turns. On your turn, spin one spinner. Then cover the item you would measure using that unit. Continue playing until all objects are covered.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths 4$

Measure And Estimate Lengths Chapter Practice

11.1 Measure Lengths in Centimeters

Measure.
Question 1.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 1$
about ______ centimeters
Answer: about 2 centimeters

Question 2.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 2$
about ______ centimeters
Answer: about 4 centimeters

11.2 Measure Objects Using Metric Lengths

Find and measure the object
Question 3.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 3$
about ______ meters
Answer: 1.5 meters

Question 4.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 4$
about _______ centimeters
Answer: about 15 centimeters

11.3 Estimate Lengths in Metric Units

Question 5.
The book is about 20 centimeters long. What is the best estimate of the length of the bookmark?
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 5$
Answer: 10 centimeters

Question 6.
What is the best estimate of the length of a paintbrush?
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 6$
Answer: 22 centimeters

11.4 Measure Lengths in Inches

Measure.
Question 7.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 7$
about ______ inches
Answer: about 30 inches

Question 8.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 8$
about ______ inches
Answer: about 4 inches

11.5 Measure Objects Using Customary Length Units

Find the object shown. Choose an inch ruler, a yardstick, or a measuring tape to measure the object. Then measure.
Question 9.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 9$
Tool: ______
Length: about _______
Answer: Object: Pencil stand
Tool: Measuring tape
Length: about 15 centimeters

Question 10.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 10$
Tool: _____
Length: about _______
Answer: Object: Calender
Tool: inch ruler
Length: about 10 inch

11.6 Estimate Lengths in Customary Units

Question 11.
The couch is about 8 feet long. What is best estimate of the length of the end table?
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 11$
Answer: The length of the end table is 2 feet.

Question 12.
What is the best estimate of the length of a pond?
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 12$
Answer: The length of a pond is 30 feet.

11.7 Measure Objects Using Different Length Units

Question 13.
Would you use more centimeters, meters, or inches to measure the length of a pencil?
centimeters
meters
inches
Answer: centimeters

Question 14.
Would you use fewer centimeters, meters, or feet to measure the length of the teacher’s desk?
centimeters
meters
feet
Answer: meters

Question 15.
YOU BE THE TEACHER
Newton says he uses more feet than meters to measure the length of a bicycle. Is he correct? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 15$
______________________
________________________
Answer: Yes Newton uses more feet than meters to measure the length of a bicycle.

11.8 Measure and Compare Lengths

Question 16.
A guinea pig cage is 51 centimeters longer than the guinea pig. How long is the cage?
$Big Ideas Math Answer Key Grade 2 Chapter 11 Measure And Estimate Lengths chp 17$
_______ centimeters
Answer: 20 centimeters

Conclusion:

We have provided genuine solutions in this chapter. Test yourself by solving the questions given at the end of the chapter. By this, you can know how much you have learned from this chapter. For more solutions to Big Ideas Math Answers Grade 2 to get the solutions for all the chapters i.e, from 1 to 15.

Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies

December 30, 2020

Hello Students!!! Are you searching for Grade 2 Chapters Answers? If yes, then our guess is correct. Here we provide the Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies in a simple manner. The topics covered in this chapter are Subtract Tens Using a Number Line, Subtract Tens and Ones Using a Number Line, Use Addition to Subtract, Decompose to Subtract, Use Compensation to Subtract so on. Download Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies pdf for free.

Big Ideas Math Book 2nd Grade Answer Key Chapter 5 Subtraction to 100 Strategies

Big Ideas Math Book 2nd Grade Answer Key Chapter 5 Subtraction to 100 Strategies helps you to complete the homework in time. Refer to Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies and prove yourself in practice tests and assignments. As per your convenience, we have provided the links according to the topics given in the textbook. Click on the below links and start your preparation.

Lesson: 1 Subtract Tens Using a Number Line

Lesson 5.1 Subtract Tens Using a Number Line
Subtract Tens Using a Number Line Homework & Practice 5.1

Lesson: 2 Subtract Tens and Ones Using a Number Line

Lesson 5.2 Subtract Tens and Ones Using a Number Line
Subtract Tens and Ones Using a Number Line Homework & Practice 5.2

Lesson: 3 Use Addition to Subtract

Lesson 5.3 Use Addition to Subtract
Use Addition to Subtract Homework & Practice 5.3

Lesson: 4 Decompose to Subtract

Lesson 5.4 Decompose to Subtract
Decompose to Subtract Homework & Practice 5.4

Lesson: 5 Decompose to Subtract Tens and Ones

Lesson 5.5 Decompose to Subtract Tens and Ones
Decompose to Subtract Tens and Ones Homework & Practice 5.5

Lesson: 6 Use Compensation to Subtract

Lesson 5.6 Use Compensation to Subtract
Use Compensation to Subtract Homework & Practice 5.6

Lesson: 7 Practice Subtraction Strategies

Lesson 5.7 Practice Subtraction Strategies
Practice Subtraction Strategies Homework & Practice 5.7

Lesson: 8 Problem Solving: Subtraction

Lesson 5.8 Problem Solving: Subtraction
Problem Solving: Subtraction Homework & Practice 5.8

Chapter: 5 – Subtraction to 100 Strategies

Subtraction to 100 Strategies Performance Task
Subtraction to 100 Strategies Activity

$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 0.1$

Organize It

Use the review words to complete the graphic organizer.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 0.2$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-0.2$

Define It
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 0.3$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-0.3$

Lesson 5.1 Subtract Tens Using a Number Line

Color to show how you can use the hundred chart to solve.

$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 1$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-1$

Show and Grow

Question 1.
70 – 50 = __

$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 3$

Answer : 20

Explanation: 70-50=20 first you subtract since difference is often a synonym for subtraction.

Question 2.
33 – 20 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 3$

Answer : 13

Explanation : 33-20=13 first you subtract since difference is often a synonym for subtraction.

Apply and Grow: Practice

Question 3.
60 – 40 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 4$

Answer : 20

Explanation : 60 – 40 = 20 first you subtract since difference is often a synonym for subtraction.

Question 4.
71 – 20 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 5$

Answer : 51

Explanation : 71 – 20 = 51 first you substract since difference is often a synonym for substraction.

Question 5.
46 – 30 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 6$

Answer : 16

Explanation : 46 – 30 = 16 first you subtract since difference is often a synonym for substraction.

Question 6.
YOU BE THE TEACHER
Your friend shows 79 − 40 on a number line. Is your friend correct? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 7$

Answer : True

Think and Grow: Modeling Real Life

You have a 74-piece set of magnetic tiles. You use 60 of them to make buildings. How many pieces are left?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 8$
Subtraction equation:
Model:
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 9$

Answer : 74 – 60 = 14

Explanation : 14 pieces are left.

Show and Grow

Question 7.
A clown has 62 balloons. She uses 40 of them to make balloon animals. How many balloons are left?

$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 10$

Answer : 62 – 40 = 12

Explanation:
Given,
A clown has 62 balloons.
She uses 40 of them to make balloon animals.
Subtract 40 from 62 you get 12.
12 balloons are left.

Question 8.
DIG DEEPER!
There are 35 people at a park. 20 of them leave. Then 10 more arrive at the park. How many people are at the park now?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 11$

Answer: 25 people

Explanation:
Given,
There are 35 people at a park. 20 of them leave.
35 – 20 = 15
Then 10 more arrive at the park.
15 + 10 = 25 people
Therefore 25 people are at the park now.

Subtract Tens Using a Number Line Homework & Practice 5.1

Question 1.
90 – 50 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 12$

Answer: 40

Explanation:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-12$

Question 2.
84 – 60 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 13$

Answer: 24
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-13$

Question 3.
22 – 10 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 14$

Answer: 12
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-13$

Question 4.
54 – 50 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 15$

Answer: 4
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-13$

Question 5.
Number Sense
Write the equation shown by the number line.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 16$

Answer: 100 – 60 = 40
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-16$

Question 6.
Modeling Real Life
There are 52 cards in a deck. You pass out 20 of them. How many cards are left in the deck?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 17$

Answer:
Given,
There are 52 cards in a deck. You pass out 20 of them.
52 – 20 = 32
32 cards are left in the deck.

Review & Refresh

Question 7.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 18$

Answer: 51

Question 8.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 19$

Answer: 93

Question 9.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 20$

Answer: 54

Lesson 5.2 Subtract Tens and Ones Using a Number Line

Explore and Grow

Color to sh

ow how you can use the hundred chart to solve.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 21$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-21$

Show and Grow

Question 1.
80 – 34 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 22$

Answer: 46
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-22$

Question 2.
56 – 23 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 23$

Answer: 33
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-23$

Apply and Grow: Practice

Question 3.
74 – 51 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 24$

Answer: 23

Question 4.
86 – 44 = ___

$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 25$

Answer: 42

Question 5.
97 – 61 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 26$

Answer: 36

Question 6.
46 – 15 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 27$

Answer: 31

Question 7.
69 – 35 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 28$

Answer: 34

Question 8.
38 – 22 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 29$

Answer: 16

Question 9.
Reasoning
Complete the number line and the equation.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 30$

Answer: 47 – 30 = 17
17 – 2 = 15

Think and Grow: Modeling Real Life

You have 85 baseball cards and 54 football cards. How many more baseball cards do you have?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 31$
Subtraction equation:
Model:
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 32$

Answer:
Given,
You have 85 baseball cards and 54 football cards.
85 – 54 = 31
Thus there are 31 more baseball cards.

Show and Grow

Question 10.
A carnival has 17 rides and 48 games. How many more games are there?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 33$

Answer:
Given,
A carnival has 17 rides and 48 games.
48 – 17 = 31 games
Therefore there are 31 more games.

Question 11.
DIG DEEPER!
There are 63 people in a theater, 21 people in the lobby, and 10 people in the parking lot. How many more people are in the theater than in both the lobby and the parking lot?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 34$

Answer:
Given,
There are 63 people in a theater, 21 people in the lobby, and 10 people in the parking lot.
21 + 10 = 31
63 – 31 = 32
Thus there are 32 people in the theater than in both the lobby and the parking lot.

Subtract Tens and Ones Using a Number Line Homework & Practice 5.2

Question 1.
95 – 40 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 35$

Answer: 55

Question 2.
29 – 12 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 36$

Answer: 17

Question 3.
58 – 14 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 37$

Answer: 44

Question 4.
77 – 31 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 38$

Answer: 46

Question 5.
86 – 26 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 39$

Answer: 60

Question 6.
70 – 18 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 40$

Answer: 52

Question 7.
Structure
Use the number lines to show 84 −62 in two ways.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 41$

Answer: 22

Question 8.
Modeling Real Life
Your classroom has 26 desks and 38 chairs. How many more chairs are there?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 42$

Answer:
Given,
Your classroom has 26 desks and 38 chairs.
38 – 26 = 12 chairs
Thus there are 12 more chairs.

Question 9.
Modeling Real Life
A grocery store orders 54 pineapples and 22 watermelons. How many more pineapples are there?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 43$

Answer:
Given,
A grocery store orders 54 pineapples and 22 watermelons.
54 – 22 = 32 pineapples
Thus there are 32 more pineapples.

Review & Refresh

Is the number even or odd?

Question 10.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 44$

Answer: Even
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-44$
8 is divisible by 2 so 8 is an even number.

Question 11.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 45$

Answer: Odd
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-45$

Lesson 5.3 Use Addition to Subtract

Explore and Grow

Show how you can use a number line to solve.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 46$
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 47$

Answer:
29 + x = 52
x = 52 – 29
x = 23
52 – 29 = 23

Show and Grow

Add to find the difference

Question 1.
43 – 15 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 48$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-48$
43 – 15 = 28

Question 2.
76 – 59 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 49$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-49$
76 – 59 = 17

Apply and Grow: Practice

Add to find the difference.

Question 3.
56 – 27 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 50$

Answer: 29
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-50$

Question 4.
21 – 13 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 51$

Answer: 8
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-51$

Question 5.
72 – 57 = ___
$Big Ideas Math Answers 2nd Grade Chapter 5 Subtraction to 100 Strategies 52$

Answer:
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-5-Subtraction-to-100-Strategies-52$

Question 6.
33 – 15 = ___
$Big Ideas Math Answers 2nd Grade Chapter 5 Subtraction to 100 Strategies 53$

Answer:
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-5-Subtraction-to-100-Strategies-53$

Question 7.
45 – 36 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 54$

Answer: 9
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-54$

Question 8.
61 – 46 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 55$

Answer: 15
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-55$

Question 9.
Structure
Use addition and the number lines to show 64 − 35 in two ways.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 56$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-55$

Think and Grow: Modeling Real Life

A ship has a crew of 52 pirates. Some of them leave. There are 27 left. How many pirates got off the ship?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 57$
Model:
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 58$

Answer:
A ship has a crew of 52 pirates. Some of them leave. There are 27 left.
52 – 27 = 25
Thus 25 pirates got off the ship.

Show and Grow

Question 10.
A pumpkin patch has 85 pumpkins. Some of them are picked. There are 48 left. How many pumpkins were picked?
$Big Ideas Math Answers 2nd Grade Chapter 5 Subtraction to 100 Strategies 59$

Answer:
Given,
A pumpkin patch has 85 pumpkins. Some of them are picked. There are 48 left.
85 – 48 = 37 pumpkins
Thus 37 pumpkins were picked.

Question 11.
DIG DEEPER!
There are 96 treats in a bowl. Newton takes 15 treats. Descartes takes some treats. There are 68 treats left. How many treats did Descartes take?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 60$

Answer:
Given,
There are 96 treats in a bowl. Newton takes 15 treats. Descartes takes some treats. There are 68 treats left.
96 – 15 = 81 treats
81 – 68 = 13 treats
Thus Descartes take 13 treats.

Use Addition to Subtract Homework & Practice 5.3

Add to find the difference.

Question 1.
92 – 67 = __
$Big Ideas Math Answers 2nd Grade Chapter 5 Subtraction to 100 Strategies 61$

Answer: 25
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-5-Subtraction-to-100-Strategies-61$

Question 2.
43 – 24 = __
$Big Ideas Math Answers 2nd Grade Chapter 5 Subtraction to 100 Strategies 62$

Answer: 19
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-5-Subtraction-to-100-Strategies-62$

Question 3.
71 – 42 = ___
$Big Ideas Math Answers 2nd Grade Chapter 5 Subtraction to 100 Strategies 63$

Answer:
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-5-Subtraction-to-100-Strategies-63$

Question 4.
63 – 58 = __
$Big Ideas Math Answers 2nd Grade Chapter 5 Subtraction to 100 Strategies 64$

Answer: 5
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-5-Subtraction-to-100-Strategies-64$

Question 5.
55 – 19 = __
$Big Ideas Math Answers 2nd Grade Chapter 5 Subtraction to 100 Strategies 65$

Answer: 36
$Big-Ideas-Math-Answers-2nd-Grade-Chapter-5-Subtraction-to-100-Strategies-65$

Question 6.
86 – 29 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 66$

Answer: 57
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-66$

Question 7.
YOU BE THE TEACHER
Descartes adds to ﬁnd 35 − 12. Is he correct? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 67$

Answer: Yes he is correct

Question 8.
Modeling Real Life
A farmer has 96 cornstalks. Some of them are sold. There are 38 left. How many cornstalks were sold?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 68$

Answer:
Given,
A farmer has 96 cornstalks. Some of them are sold. There are 38 left.
96 – 38 = 58
58 cornstalks were sold

Question 9.
DIG DEEPER!
There are 56 bouncy balls in a pack. Your friend takes some. You take 23. There are 23 bouncy balls left. How many did your friend take?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 69$

Answer:
Given,
There are 56 bouncy balls in a pack. Your friend takes some.
You take 23. There are 23 bouncy balls left.
56 – 23 = 33
33 – 23 = 10
Your friend take 10 bouncy balls.

Review & Refresh

Draw to show the time

Question 10.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 70$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-70$

Question 11.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 71$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-71$

Lesson 5.4 Decompose to Subtract

Explore and Grow

Color to show how you can get to a decade number by subtracting.

$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 72$ How can the equation above help you ﬁnd 36 − 9?
______________________________
______________________________
______________________________

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-72$

Show and Grow

Break apart the number being subtracted. Then ﬁnd the difference. Use the number line to help.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 73$

Question 1.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 74$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-74$

Question 2.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 75$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-75$

Question 3.
75 – 7 = __

Answer: 68

Question 4.
82 – 6 = __

Answer: 76

Apply and Grow: Practice

Break apart the number being subtracted. Then ﬁnd the difference.

Question 5.
47 – 8 = __

Answer: 39

Question 6.
56 – 9 = __

Answer: 47

Question 7.
43 – 5 = __

Answer: 38

Question 8.
62 – 6 = __

Answer: 56

Question 9.
__ = 41 – 4

Answer: 37

Question 10.
__ = 44 – 7

Answer: 37

Question 11.
Reasoning
Which equation is shown by the number line?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 76$

Answer:
50 + 5 = 55
Mark 50 on the line and add 5 from 5 we get 55
55 – 8 = 47
First mark 55 on the line and count 8 before 55 we get 47
47 + 3 = 50
First, mark on 47 and add 3 from 47 we get 50 as an answer.

Think and Grow: Modeling Real Life

Your friend has 45 comic books. You have 8 fewer. How many comic books do you have?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 77$
Subtraction equation:
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 78$

Answer:
Given,
Your friend has 45 comic books. You have 8 fewer.
45 – 8 = 37 comic books

Show and Grow

Question 12.
Your friend can do 33 tricks on a yo-yo. You can do 9 fewer. How many tricks can you do?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 79$

Answer:
Given,
Your friend can do 33 tricks on a yo-yo. You can do 9 fewer.
33 – 9 = 24

Question 13.
Descartes’s walk was 8 minutes longer than Newton’s. Descartes’s walk was 56 minutes. How long was Newton’s walk?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 80$

Answer:
Given,
Descartes’s walk was 8 minutes longer than Newton’s.
Descartes’s walk was 56 minutes.
56 – 8 = 48 minutes
Thus Newton’s walk was 48 minutes.

Decompose to Subtract Homework & Practice 5.4

Break apart the number being subtracted. Then ﬁnd the difference. Use the number line to help
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 81$

Question 1.
95 – 6 = __
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 82$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-82$

Question 2.
86 – 8 = __
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 83$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-83$

Question 3.
89 – 9 = __

Answer: 80

Question 4.
82 – 7 = __

Answer: 75

Question 5.
__ = 83 – 5

Answer: 78

Question 6.
__ = 98 – 9

Answer: 89

Question 7.
Number Sense
Which way would you break apart 9 to find 25 – 9 ? Explain. Then find the difference.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 84$

Answer: 16

Question 8.
Modeling Real Life
You build a train track with 32 pieces. You remove 6 pieces. How many pieces does the train track have now?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 85$

Answer:
Given,
You build a train track with 32 pieces. You remove 6 pieces.
32 – 6 = 26 pieces

Question 9.
Modeling Real Life
You read 42 pages on Friday. You read 8 fewer pages on Saturday. How many pages do you read on Saturday?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 86$

Answer:
Given,
You read 42 pages on Friday.
You read 8 fewer pages on Saturday.
42 – 8 = 34 pages

Review & Refresh

Question 10.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 87$

Answer: 3 rows of 5
5 + 5 + 5 = 15

Lesson 5.5 Decompose to Subtract Tens and Ones

Explore and Grow

Color to show how you can break apart 16 to ﬁnd the difference.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 88$

Explain your strategy
______________________________
______________________________
______________________________

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-88$

Show and Grow

Break apart the number being subtracted. Then ﬁnd the difference.

Question 1.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 89$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-89$

Question 2.
63 – 26 = __
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 90$

Answer: 37
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-90$

Apply and Grow: Practice

Break apart the number being subtracted. Then ﬁnd the difference.

Question 3.
32 – 13 = __
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 91$

Answer: 19
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-91$

Question 4.
46 – 17 = __
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 92$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-92$

Question 5.
93 – 45 = __

Answer: 48
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-92.1$

Question 6.
71 – 24 = __

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-92.2$

Question 7.
Structure
Can you use the equations to ﬁnd 87 − 29?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 93$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-93$

Think and Grow: Modeling Real Life

How many more pizzas do you sell than Newton?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 94$
How many fewer pizzas does Newton sell than Descartes?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 95$

Answer:
Number of pizzas Descartes sold = 57
Number of pizzas Newton sold = 38
57 – 38 = 19 fewer pizzas

Show and Grow

Question 8.
How many more tickets does Newton sell than Descartes?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 96$

Answer:
85 – 47 = 38 more tickets
Thus Newton sell 38 more tickets than Descartes.

Question 9.
DIG DEEPER!
Your friend picks 49 apples. 11 apples are green and 14 apples are red. The rest are yellow. How many apples are yellow?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 97$

Answer:
Given,
Your friend picks 49 apples. 11 apples are green and 14 apples are red. The rest are yellow.
11 + 14 = 25
49 – 25 = 24 yellow apples

Decompose to Subtract Tens and Ones Homework & Practice 5.5

Break apart the number being subtracted. Then ﬁnd the difference.

Question 1.
45 – 16 = __
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 98$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-98$

Question 2.
52 – 27 = __
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 99$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-99$

Question 3.
84 – 55 = __

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-100$

Question 4.
76 – 29 = __

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-101$

Question 5.
__ = 23 – 14

Answer: 9

Question 6.
__ = 68 – 49

Answer: 19

Question 7.
Reasoning
Complete the number line and the equation.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 100$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-100 (2)$

Question 8.
Modeling Real Life
How many more cups does Descartes sell than Newton?

Question 9.
DIG DEEPER!
In Exercise 8, 100 cups are sold for the day. Newton sold the rest. How many cups did Newton sell?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 101$

Review & Refresh

Question 10.
47 + 32 = ___

Answer: 79

Question 11.
74 + 15 = __

Answer: 89

Lesson 5.6 Use Compensation to Subtract

Explore and Grow

Use mental math to ﬁnd each difference.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 102$

How did you use mental math and 41 − 20 to ﬁnd each difference?
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 103$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-102$

Show and Grow

Use compensation to subtract.

Question 1.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 104$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-104$

Question 2.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 105$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-105$

Question 3.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 106$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-106$

Question 4.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 107$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-107$

Apply and Grow: Practice

Question 5.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 108$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-108$

Question 6.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 109$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-109$

Question 7.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 110$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-110$

Question 8.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 111$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-111$

Question 9.
35 – 7 = __

Answer: 28

Question 10.
53 – 37 = __

Answer: 16

Question 11.
Reasoning
Match the expressions that have the same difference.
$Big Ideas Math Answers Grade 2 Chapter 5 Subtraction to 100 Strategies 112$

Answer:
$Big-Ideas-Math-Answers-Grade-2-Chapter-5-Subtraction-to-100-Strategies-112$

Think and Grow: Modeling Real Life

You blow up 57 balloons for a carnival game. Some of them pop. There are 29 left. How many balloons popped?
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 113$
Subtraction equation:
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 114$

Answer:
Given,
You blow up 57 balloons for a carnival game. Some of them pop.
There are 29 left.
57 – 29 = 28
28 balloons are popped.

Show and Grow

Question 12.
There are 66 cars in a parking lot. Some of them leave. There are 31 left. How many cars leave the parking lot?
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 115$

Answer:
Given,
There are 66 cars in a parking lot. Some of them leave. There are 31 left.
66 – 31 = 35
35 cars leave the parking lot.

Question 13.
You have 78 pictures on your tablet. You take 4 more pictures. Then you delete 17. How many pictures are on your tablet now?
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 116$

Answer:
Given,
You have 78 pictures on your tablet. You take 4 more pictures. Then you delete 17.
78 + 4 = 82
84 – 17 = 67
67 pictures are on your tablet now.

Question 14.
You pick 59 strawberries. You eat 5 of them. Then you give 22 to your friend. How many strawberries do you have left?
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 117$

Answer:
Given,
You pick 59 strawberries. You eat 5 of them. Then you give 22 to your friend.
59 – 5 = 54
54 – 22 = 32
Thus 32 strawberries are left.

Use Compensation to Subtract Homework & Practice 5.6

Use compensation to subtract.

Question 1.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 118$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-118$

Question 2.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 119$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-119$

Question 3.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 120$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-120$

Question 4.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 121$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-121$

Question 5.
27 – 6 = __

Answer: 21

Question 6.
67 – 14 = __

Answer: 53

Use compensation to subtract.

Question 7.
77 – 52 = __

Answer: 25

Question 8.
69 – 44 = ___

Answer: 25

Question 9.
Reasoning
Use the numbers to complete the problem.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 122$

Answer:
$Big-Ideas-Math-Solutions-Grade-2-Chapter-5-Subtraction-to-100-Strategies-122$

Question 10.
Modeling Real Life
There are 36 boats on a lake. Some of them leave. There are 21 boats left. How many boats leave the lake?
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 123$

Answer:
Given,
There are 36 boats on a lake. Some of them leave. There are 21 boats left.
36 – 21 = 15
15 boats leave the lake.

Review & Refresh

Question 11.
Circle groups of 3. Write a repeated addition equation to match.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 124$

Answer: 4 groups of 3
3 + 3 + 3 + 3 =12

Lesson 5.7 Practice Subtraction Strategies

Explore and Grow

Use any strategy to ﬁnd the difference.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 125$

Compare your strategy to your partner’s strategy. How are your strategies alike? How are they different?
_______________________________
_______________________________
_______________________________

Answer: 42
Use mental math strategy to find the difference of the two numbers 76 and 34
76 – 34 = 42

Show and Grow

Question 1.
81 – 50 = ___

Answer: 31

Question 2.
94 – 8 = __

Answer: 86

Question 3.
58 – 49 = __

Answer: 9

Question 4.
77 – 35 = ___

Answer: 42

Apply and Grow: Practice

Question 5.
97 – 71 = __

Answer: 26

Question 6.
68 – 9 = __

Answer: 59

Question 7.
52 – 28 = ___

Answer: 24

Question 8.
83 – 60 = ___

Answer: 23

Question 9.
__ = 75 – 11

Answer: 64

Question 10.
___ = 46 – 35

Answer: 11

Question 11.
YOU BE THE TEACHER
Your friend uses compensation to subtract. Is your friend correct? Explain.
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 126$

Answer:
35 – 30 = 5
Yes, your friend is correct.

Question 12.
A store has 38 hats. 17 of them are sold. How many hats are left?
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 127$

Answer:
Given,
A store has 38 hats. 17 of them are sold.
38 – 17 = 21
21 hats are left.

Think and Grow: Modeling Real Life

You have 41 toys. You put some away. There are 22 toys left. How many toys did you put away?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 128$
Subtraction equation:
$Big Ideas Math Solutions Grade 2 Chapter 5 Subtraction to 100 Strategies 129$

Answer:
Given,
You have 41 toys. You put some away.
There are 22 toys left.
41 – 22 = 19 toys
Thus you put away 19 toys.

Show and Grow

Question 13.
A teacher has 62 prizes. He gives some away. There are 26 left. How many prizes did the teacher give away?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 130$

Answer:
Given,
A teacher has 62 prizes. He gives some away. There are 26 left.
62 – 26 = 36
Thus the teacher gives away 36 prizes.

Question 14.
A roller-skating rink rents 28 pairs of skates. There are 52 pairs left. How many pairs of skates were there to start?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 131$

Answer:
Given,
A roller-skating rink rents 28 pairs of skates. There are 52 pairs left.
52 + 28 = 80
80 pairs of skates were there to start.

Question 15.
A baker has 16 loaves of french bread and 31 loaves of wheat bread. She sells 18 loaves. How many loaves does the baker have left?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 132$

Answer:
Given,
A baker has 16 loaves of french bread and 31 loaves of wheat bread. She sells 18 loaves.
16 + 31 = 47 loaves
47 – 18 = 29 loaves
The baker has left 29 loaves.

Practice Subtraction Strategies Homework & Practice 5.7

Question 1.
50 – 20 = __

Answer:
By using the mental math we can subtract the two numbers 50 and 20
50 – 20 = 30

Question 2.
62 – 30 = ___

Answer:
By using the mental math we can subtract the two numbers 62 and 30
62 – 30 = 32

Question 3.
88 – 64 = ___

Answer:
By using the mental math we can subtract the two numbers 88 and 64
88 – 64 = 24

Question 4.
42 – 17 = __

Answer:
By using the mental math we can subtract the two numbers 42 and 17
42 – 17 = 25

Question 5.
__ = 97 – 56

Answer:
By using the mental math we can subtract the two numbers 97 and 56
97 – 56 = 41

Question 6.
___ = 71 – 18

Answer:
By using the mental math we can subtract the two numbers 71 and 18
71 – 18 = 53

Question 7.
___ = 63 – 25

Answer:
By using the mental math we can subtract the two numbers 63 and 25
63 – 25 = 38

Question 8.
__ = 21 – 6

Answer:
By using the mental math we can subtract the two numbers 21 and 6
21 – 6 = 15

Question 9.
Number Sense
Which expressions have a difference of 24?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 133$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-133$

Question 10.
Modeling Real Life
27 dogs were adopted from a shelter. There are 14 left. How many dogs were there to start?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 134$

Answer:
Given,
27 dogs were adopted from a shelter. There are 14 left.
27 – 14 = 13

Question 11.
Modeling Real Life
86 hot dogs were sold at a baseball game. There are 14 left. How many hot dogs were there to start?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 135$

Answer:
Given,
86 hot dogs were sold at a baseball game. There are 14 left.
86 – 14 = 72 hot dogs

Review and Refresh

Question 12.
Circle the shapes that show halves.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 136$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-136$
The above two shapes are divided into two equal parts.
Thus the second figure and fourth figure are halves.

Lesson 5.8 Problem Solving: Subtraction

Explore and Grow

Model the story.

Newton collects 58 ﬂowers. He gives 27 away. How many ﬂowers does Newton have left?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 137$

Answer:
Given,
Newton collects 58 ﬂowers. He gives 27 away.
58 – 27 = 31
Thus 31 flowers are left.

Newton gives 11 more ﬂowers away. How many ﬂowers does Newton have now?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 138$

Answer:
Given,
31 – 11 = 20
Newton has 20 flowers now.

Show and Grow

Question 1.
There are 60 kids at a summer camp. 26 are swimming. 15 are playing soccer. The rest are hiking. How many kids are hiking?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 139$

Answer:
Total kids = 60
Swimming = 26
Playing soccer = 15
Hiking = 60 – 26 – 15 = 19 .

Apply and Grow: Practice

Question 2.
Your class recycles 72 cans. You collected 18 of them. Your friend collected 9. The other students collected the rest. How many cans did the other students collect?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 140$

Answer:
Given,
Your class recycles 72 cans. You collected 18 of them.
72 – 18 = 54
Your friend collected 9. The other students collected the rest
54 – 9 = 45
Therefore the other students collect 45 cans.

Question 3.
98 people visit the library in a week. 34 visit on Monday. 14 visit on Tuesday. How many people visit the library the rest of the week?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 141$

Answer:
Given,
98 people visit the library in a week. 34 visit on Monday. 14 visit on Tuesday.
34 + 14 = 48
98 – 48 = 50
50 people visit the library the rest of the week.

Question 4.
You have 61 stickers. You give 24 stickers to your friend. Then you get 6 more stickers. How many stickers do you have now?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 142$

Answer:
Given,
You have 61 stickers. You give 24 stickers to your friend.
61 – 24 = 37 stickers
Then you get 6 more stickers.
37 + 6 = 43 stickers
Thus you have 43 stickers now.

Think and Grow: Modeling Real Life

You collect 47 pine cones. Your friend collects 21 fewer than you. How many pine cones do you and your friend collect in all?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 143$
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 144$

Answer:
Given,
You collect 47 pine cones. Your friend collects 21 fewer than you.
47 – 21 = 26
Now we have to find how many pine cones do you and your friend collect in all.
47 + 26 = 73 pine cones

Show and Grow

Question 5.
A garbage truck collects trash from 68 trash cans. Another truck collects trash from 39 fewer cans. How many cans of trash do the trucks collect from in all?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 145$

Explain the steps you used to solve the problem.
_________________________________
_________________________________
_________________________________

Answer:
Given,
A garbage truck collects trash from 68 trash cans. Another truck collects trash from 39 fewer cans
68 – 39 = 29 trash cans are collected by another cans.
68 + 29 = 97 trash cans

Problem Solving: Subtraction Homework & Practice 5.8

Question 1.
There are 39 people in a pool. 8 are ﬂoating on rafts. 11 are playing a game. The rest are swimming laps. How many people are swimming laps?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 146$

Answer:
Given,
There are 39 people in a pool. 8 are ﬂoating on rafts. 11 are playing a game. The rest are swimming laps.
39 – 19 = 20
Thus 20 people are swimming laps.

Question 2.
Newton collects 24 rocks. He gives 13 to Descartes. Then Newton collects 8 more rocks. How many rocks does Newton have now?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 147$

Answer:
Given,
Newton collects 24 rocks. He gives 13 to Descartes.
24 – 13 = 11
Then Newton collects 8 more rocks
11 + 8 = 19
Newton has 19 rocks now.

Question 3.
Modeling Real Life
You use 76 craft sticks. Your friend uses 62 fewer than you. How many craft sticks do you and your friend use in all?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 148$

Answer:
Given,
You use 76 craft sticks. Your friend uses 62 fewer than you.
76 – 62 = 14 craft sticks
your friend uses 14 craft sticks
76 + 14 = 90 craft sticks

Question 4.
Modeling Real Life
You put 52 photos in an album. Your friend puts in 17 fewer than you. How many photos do you and your friend put in the album in all?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 149$

Answer:
Given,
You put 52 photos in an album. Your friend puts in 17 fewer than you.
52 – 17 = 35 photos
52 + 35 = 87 photos
Thus 87 photos you and your friend put in the album in all.

Review & Refresh

Question 5.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 150$

Answer: A hexagon is a polygon that contains 6 straight sides and 6 vertices.

Question 6.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 151$

Answer: A triangle is a polygon that consists of 3 straight sides and 3 vertices.

Subtraction to 100 Strategies Performance Task

A science class uses an incubator to hatch chicken eggs.

Question 1.
The temperature of the incubator must be 99°F. The current temperature is 25°F less than the correct temperature. What is the current temperature?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 152$

Answer:
Given,
The temperature of the incubator must be 99°F. The current temperature is 25°F less than the correct temperature.
99°F – 25°F = 74°F
The current temperature is 74°F.

Question 2.
a. The school has 4 incubators. Each one has 8 eggs. Each egg must be rotated 3 times every day. How many total rotations must be made to all of the eggs in all 4 incubators?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 153$

Answer:
Given,
The school has 4 incubators.
Each one has 8 eggs. Each egg must be rotated 3 times every day.
8 × 4 = 32 eggs in all 4 incubators.
32 × 4 = 128 rotations

b. Two of your friends each complete 25 rotations. How many rotations are left?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 154$

Answer:
Two of your friends each complete 25 rotations.
128 – 25 = 103 rotations are left

Question 3.
a. The first egg hatches at 11:00. The second egg hatches a half hour late. What time does the second egg hatch?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 155$

Answer:
Given,
The first egg hatches at 11:00. The second egg hatches a half hour late.
11:00 + 00:30 = 11:30

b. The third egg hatches an hour after the second egg. What time does the third egg hatch?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 155.1$

Answer:
Given,
The third egg hatches an hour after the second egg.
11:30 + 1:00 = 12:30

Subtraction to 100 Strategies Activity

Three in a Row: Subtraction

To Play: Players take turns. On your turn, spin both spinners. Subtract the numbers, and cover the difference on the game board. Continue until someone gets three in a row.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 156$

Subtraction to 100 Strategies Chapter Practice 5

5.1 Subtract Tens and Ones Using a Number Line

Question 1.
90 – 40 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 157$

Answer: 50
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-157$

Question 2.
66 – 20 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 158$

Answer: 46
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-157$

5.2 Subtract Tens and Ones Using a Number Line

Question 3.
78 – 32 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 159$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-159$

Question 4.
49 – 16 = ___
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 160$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-159$

Question 5.
Modeling Real Life
You have 54 stickers and 21 key chains. How many more stickers do you have than key chains?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 161$

Answer:
Given,
You have 54 stickers and 21 key chains.
54 – 21 = 33 stickers
Thus you have 33 stickers than key chains.

5.3 Use Addition to Subtract

Add to ﬁnd the difference.

Question 6.
44 – 28 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 162$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-161$

Question 7.
84 – 56 = __
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 163$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-162$

5.4 Decompose to Subtract

Break apart the number being subtracted. Then ﬁnd the difference.

Question 8.
44 − 5 = __

Answer: 39
$Big Ideas Math Book 2nd Grade Answer Key Chapter 5 Subtraction to 100 Strategies img_164$
Break the number into two parts and find the difference of two numbers.

Question 10.
67 − 9 = __

Answer: 58
$Big Ideas Math Book 2nd Grade Answer Key Chapter 5 Subtraction to 100 Strategies img_165$
Break the number into two parts and find the difference of two numbers.

Question 11.
32 − 4 = ___

Answer: 28
$Big Ideas Math Book 2nd Grade Answer Key Chapter 5 Subtraction to 100 Strategies img_166$
Break the number into two parts and find the difference of two numbers.

Question 12.
Number Sense
Which way would you break apart 8 to ﬁnd 56 − 8? Explain.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 164$

Answer: Both are correct to use break apart strategy to find the difference between 56 and 8.

5.5 Decompose to Subtract Tens and Ones

Break apart the number being subtracted. Then ﬁnd the difference.

Question 13.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 165$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-165$

Question 14.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 166$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-166$

5.6 Use Compensation to Subtract

Use compensation to Subtract

Question 15.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 167$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-167$

Question 16.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 168$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-168$

Question 17.
Reasoning
Match the expressions that have the same difference.
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 169$

Answer:
$Big-Ideas-Math-Answer-Key-Grade-2-Chapter-5-Subtraction-to-100-Strategies-169$

5.7 Practice Subtraction Strategies

Question 18.
58 − 36 = ___

Answer: 22

Question 19.
67 − 52 = ___

Answer: 15

5.8 Problem Solving: Subtraction

Question 20.
There are 31 papers to pass out. You pass out 12 papers. Then you pass out 8 more. How many papers do you have left?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 170$

Answer:
Given,
There are 31 papers to pass out. You pass out 12 papers.
31 – 12 = 19 papers
Then you pass out 8 more.
19 + 8 = 27 papers are left.

Question 21.
47 students are on the playground. 23 fewer students are playing soccer than on the playground. How many students are on the playground and playing soccer in all?
$Big Ideas Math Answer Key Grade 2 Chapter 5 Subtraction to 100 Strategies 171$

Answer:
Given,
47 students are on the playground.
23 fewer students are playing soccer than on the playground.
47 – 23 = 24 students
47 + 24 = 71 students

Final Words:

The solutions are prepared by the maths experts as per the latest syllabus. Hope the details mentioned in the above article Big Ideas Math Book 2nd Grade Answer Key Chapter 5 Subtraction to 100 Strategies is beneficial for all the students. Bookmark our eurekamathanswerkeys.com site to get the solution key for Big Ideas Math Grade 2 Chapters.