We included **HMH Into Math Grade 2 Answer Key PDF** **Module 1 Lesson 3 Relate Addition and Subtraction** to make students experts in learning maths.

## HMH Into Math Grade 2 Module 1 Lesson 3 Answer Key Relate Addition and Subtraction

I Can write and solve related addition and subtraction facts.

**Spark Your Learning**

How can you show the number of pieces of pizza that Kayla and her friends have?

Answer:

Explanation:

Addition fact that match the problem is 5 + 8 = 13

Subtraction fact that match the problem is 13 – 5 = 8

Read the following problem: Kayla and her friends have 5 pieces of cheese pizza and 7 pieces of mushroom pizza. How can you show the number of pieces of pizza that they have? Have children show how their concrete models or drawings will change if Kayla and her friends eat 5 pieces of pizza. Then have children write an addition fact and a subtraction fact to match their concrete models or drawings.

**Build Understanding**

There are 6 ducks in a pond. Then 9 ducks join them. How many ducks are in the pond now?

A. How can you draw to show the two groups of ducks?

Answer:

B. How can you write an addition fact to solve the problem?

___ + ___ = ___ ____ ducks

Answer:

6 + 9 = 15

C. How can you complete the bar model to show the problem?

Answer:

D. How can you use the addends in the addition fact to find the difference for a related subtraction fact? Use the bar model to help.

15 – 6 = ___

Answer:

15 – 6 = 9

**Turn and Talk** How does knowing 6 + 4 = 10 help you find 10 – 6 = ? Explain.

**Step It Out**

1. Use related facts to complete a bar model.

A. Complete the addition facts.

9 + 7 = ___

7 + 9 = ___

Answer:

9 + 7 = 16

7 + 9 = 16

B. Write 9, 7, and 16 in the bar model.

Answer:

C. Complete the related subtraction facts.

16 – 9 = ____

16 – 7 = ___

Answer:

16 – 9 = 7

16 – 7 = 9

Explanation:

I wrote the related subtraction facts.

**Check Understanding**

Question 1.

Kane counts 7 grasshoppers ¡n the backyard and some grasshoppers in the front yard. There are 11 grasshoppers in all. How many grasshoppers are in the front yard?

Write an addition fact. Complete the bar model. Write a related subtraction fact. Solve.

Answer:

Explanation:

There are 4 grasshoppers in the front yard.

**On Your Own**

Question 2.

**Attend to Precision** There are 15 items in a storage box. There are 7 books. The rest of the items are toys. How many toys are in the storage box? Write an addition fact. Complete the bar model. Write a related subtraction fact. Solve.

Answer:

Explanation:

There are 8 toys in the storage box.

Question 3.

**Use Repeated Reasoning** Complete the related facts.

9 + 4 = ____ 13 – 9 = ___

4 + 9 = ____ 13 – 4 = ____

Answer:

9 + 4 = 13, 13 – 9 = 4

4 + 9 = 13, 13 – 4 = 9.

Explanation:

I wrote all the related facts of above numbers.

Question 4.

**Open Ended** Write on addition fact and a related subtraction fact. Explain how the two facts are related.

___________________________

___________________________

Answer:

5 + 6 = 11

11 – 5 = 6

Explanation:

I wrote an addition fact and a related subtraction fact they are 5 + 6 = 11 and 11 – 5 = 6.

**I’m in a Learning Mindset!**

What types of decisions did I make when solving Problem 2?

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