## Engage NY Eureka Math 2nd Grade Module 1 Lesson 7 Answer Key

### Eureka Math Grade 2 Module 1 Lesson 7 Problem Set Answer Key

Question 1.
Solve
a. 10 – 9  = 1,
1 + 1 = 2,
So 11 – 9 = 2,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 1 to 1 we will get 2,
therefore 11 – 9 = 2.

b. 12 – 9 = _3___
10 – 9  = 1,
2 + 1 = 3,
So 12 – 9 = 3,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 2 to 1 we will get 3,
therefore 12 – 9 = 3.

c. 13 – 9 = __4__
10 – 9  = 1,
3 + 1 = 4,
So 13 – 9 = 4,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 3 to 1 we will get 4,
therefore 13 – 9 = 4.

d. 11 – 8 = _3___
10 – 8  = 2,
1 + 2 = 3,
So 11 – 8 = 3,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 1 we will get 3,
therefore 11 – 8 = 3.

e. 12 – 8 = __4__
10 – 8  = 2,
2 + 2 = 4,
So 12 – 8 = 4,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 2 we will get 4,
therefore 12 – 8 = 4.

f. 13 – 8 = _5_
10 – 8  = 2,
3 + 2 = 5,
So 13 – 8 = 5,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 3 we will get 5,
therefore 13 – 8 = 5.

g. 11 – 7 = __4__
10 – 7  = 3,
1 + 3 = 4,
So 11 – 7 = 4,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 3 to 1 we will get 4,
therefore 11 – 7 = 4.

h. 12 – 7 = __5__
10 – 7  = 3,
2 + 3 = 5,
So 12 – 7 = 5,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 3 to 2 we will get 5,
therefore 12 – 7 = 5.

i. 13 – 7 = __6__
10 – 7  = 3,
3 + 3 = 6,
So 13 – 7 = 6,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 3 to 3 we will get 6,
therefore 13 – 7 = 6.

Question 2.
Solve
a. 14 – 6 = __8__
10 – 6  = 4,
4 + 4 = 8,
So 14 – 6 = 8,

Explanation:
Solved 10 – 6 as substracting 6 from 10
we will get 4 and adding 4 to 4 we will get 8,
therefore 14 – 6 = 8.

b. 11 – 5 = __6__
10 – 5  = 5,
1 + 5 = 6,
So 11 – 5 = 6,

Explanation:
Solved 10 – 5 as substracting 5 from 10
we will get 5 and adding 5 to 1 we will get 6,
therefore 11 – 5 = 6.

c. 16 – 7 = __9__
10 – 7  = 3,
6 + 3 = 9,
So 16 – 7 = 9,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 3 to 6 we will get 9,
therefore 16 – 7 = 9.

Solve.

Question 3.
Shane has 12 pencils. He gives some pencils to his friends.
Now, he has 7 left. How many pencils did he give away?
_______5_______
Shane gave away 5 pencils,

Explanation:
Shane has 12 pencils. He gives some pencils to his friends.
Now, he has 7 left. Number of pencils did he gave away are
12 – 7 = 5 pencils.

Question 4.
Victoria gave 6 celery sticks to her mom. She started with 13.
How many celery sticks does she have left?

______________7_____________
Victoria is left with 7 celery sticks,

Explanation:
Given Victoria gave 6 celery sticks to her mom.
She started with 13. Number of celery sticks does
she have left are 13 – 6 = 7.

### Eureka Math Grade 2 Module 1 Lesson 7 Exit Ticket Answer Key

Solve.

Question 1.
15 – 7 = __8___
10 – 7  = 3,
5 + 3 = 8,
So 15 – 7 =8,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 5 to 3 we will get 8,
therefore 12 – 8 = 4.

Question 2.
14 – 6 = __8___
10 – 6  = 4,
4 + 4 = 8,
So 14 – 6 = 8,

Explanation:
Solved 10 – 6 as substracting 6 from 10
we will get 4 and adding 4 to 4 we will get 8,
therefore 14 – 6 = 8.

### Eureka Math Grade 2 Module 1 Lesson 7 Homework Answer Key

Question 1.
Take out ten.  17 – 10 = 7,
14 -10 = 4,
18 – 10 = 8,
13 -10 = 3,
16 – 10 = 6,
19 – 10 = 9,

Explanation:
Given to take out ten from 17,
So 17 – 10 = 7, so 17 = 7 +10,
taking 10 from 14 we get 4, as
14 = 4 + 10, taking 10 from 18 we get
8,  as 18 = 8 + 10, taking 10 from 13
we get 3, as 3 + 10 = 13, taking 10
from 16 we get 6, as 16 = 6 + 10 and taking 10
from 19 we get 9 as 19 = 9 +10 as shown above.

Question 2.
Solve.
10 – 2 = ____8_______
10 – 7 = _____3______
10 – 6 = ______4_____
10 – 5 = _____5______
10 – 8 = ______2_____
10 – 9 = ______1_____
10 – 2 = 8,
10 – 7 = 3,
10 – 6 = 4,
10 – 5 = 5,
10 – 8 = 2,
10 – 9 = 1,

Explanation:
Solved by substracting 2 from 10 we will get 8,
7 from 10 we will get 3,
6 from 10 we will get 4,
5 from 10 we will get 5,
8 from 10 we will get 2 and
9 from 10 we will get 1.

Question 3.
Solve
a. 10 – 9 = 1
1 + 4 = __5__
10 – 9 = 1,
10 + 1 = 11,
So 20 – 9 = 11,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 1 to 10 we will get 11,
therefore 20 – 9 = 11.

b. 15 – 8 = ___7__

10 – 8 = 2,
5 + 2 = 7,
So 15 – 8 = 7,

Explanation:
Solved 10 -8  as substracting 8 from 10
we will get 2 and adding 5 to 2 we will get 7,
therefore 20 – 9 = 11.

c. 13 – 7 = __6___

10 – 7 = 3,
3 + 3 = 6,
So 13 – 7 = 6,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 3 to 3 we will get 6,
therefore 13 – 7 = 6.

d. 12 – 8 = __4___
10 – 8 = 1,
2 + 2 = 4,
So  12  – 8 = 4,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 2 we will get 4,
therefore 12 – 8 = 4.

Solve.

Question 4.
Robert has 16 cups. Some are red. Nine are blue.
How many cups are red?

___7__ cups are red.
7 cups are red,

Explanation:
Given Robert has 16 cups and some are red, nine are blue,
So number of cups red are 16 – 9 = 7.

Question 5.
Lucy spent $8 on a game. She started with$14.
How much money does Lucy have left?

___________$6_____________ Answer: Lucy is left with$6,

Explanation:
Given Lucy spent $8 on a game,She started with$14.
Money does Lucy have left with is $14 –$8 = \$6.