Engage NY Eureka Math 1st Grade Module 4 Lesson 18 Answer Key

Eureka Math Grade 1 Module 4 Lesson 18 Problem Set Answer Key

Question 1.
Each of the solutions is missing numbers or parts of the drawing. Fix each one so it is accurate and complete.

By adding 7 and 1 in the first figure you get the result 13 + 8 = 21
13 + 7 = 20
20 + 1 = 21
By using the number bond we get the answer.
13 + 4 = 17
17 + 4 = 21

Question 2.
Circle the student work that correctly solves the addition problem.

d. Fix the work that was incorrect by making new work in the space below with the matching number sentence.

But in the above figure it is given that
16 + 3 = 19
19 + 2 = 21

Question 3.
Circle the student work that correctly solves the addition problem.

d. Fix the work that was incorrect by making a new drawing in the space below with the matching number sentence.

Question 4.
Solve using quick tens, the arrow way, or number bonds.
17 + 5 = _______

Share with your partner. Discuss why you chose to solve the way you did.
I like to make a ten because I can add quicker. I know my partners to ten.

Eureka Math Grade 1 Module 4 Lesson 18 Exit Ticket Answer Key

Circle the work that correctly solves the addition problem.

d. Fix the work that was incorrect by making a new drawing in the space below with the matching number sentence.

Question 1.
Two students both solved the addition problem below using different methods.

Are they both correct? Why or why not?
Student 1 solved the problem using the number bond pairs.
Student 2 solved the problem using the arrow method.

Question 2.
Another two students solved the same problem using quick tens.

Are they both correct? Why or why not?