## 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.

Answer:

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.

Answer:

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

Answer:

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.

Answer:

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

Answer:

Question 4.

Solve using quick tens, the arrow way, or number bonds.

17 + 5 = _______

Answer:

Share with your partner. Discuss why you chose to solve the way you did.

Answer:

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.

Answer:

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

Answer:

### Eureka Math Grade 1 Module 4 Lesson 18 Homework Answer Key

Question 1.

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

Are they both correct? Why or why not?

Answer: Both are correct

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?

Answer: Student 2 is correct.

Question 3.

Circle any student work that is correct.

Answer:

Fix the student work that was incorrect by making a new drawing or drawings in the space below.

Answer:

Choose a correct student work, and give a suggestion for improvement.