We included **HMH Into Math Grade 2 Answer Key PDF** **Module 1 Lesson 7 Add 3 Numbers Using Mental Strategies and Properties** to make students experts in learning maths.

## HMH Into Math Grade 2 Module 1 Lesson 7 Answer Key Add 3 Numbers Using Mental Strategies and Properties

I Can find the sum of three numbers.

**Spark Your Learning**

How can you show the number of stuffed animals Logan has?

Answer:

Explanation: 6 + 2 = 8, 8 + 4 = 12.

Logan has 12 stuffed animals.

Read the following problem: Logan collects stuffed animals. He has 6 cats, 2 teddy bears, and 4 dogs. How many stuffed animals does Logan have? Have children use tools to add the three numbers.

**Build Understanding**

On the playground, there are 4 children playing ball, 3 children on the swings, and 2 children playing in a sandbox. How many children are on the playground?

A. How can you use tools to show each addend?

Answer:

B. How can you group two addends to odd first? Draw to show what you did.

Answer:

C. Complete the addition fact to solve the problem.

4 + 3 + 2 = ___

___ children

Explanation:

Add 4 + 3 = 7, 7 + 2 = 9

9 children are at the playground.

**Turn and Talk** How can you group the addends in a different order to solve the problem? Explain.

**Step It Out**

1. Alice has4 small toy boats, 5 toy cars, and 3 toy trucks. How many toys does she have?

A. Write an addition fact to show the problem.

___ + ___ + ___ =

B. Choose two addends to add first. Circle the addends.

**THINK:** Look for facts you know.

___ + ___ + ___ =

C. Add the two addends.

___ + ___ = ___

D. Add the sum and the third addend. Solve.

___ + ___ = ___ toys

Answer:

Explanation:

4 + 5 + 3 = 12

Alice have 12 toys.

**Check Understanding Math Board**

Question 1.

There are 4 pink pens, 5 red pens, and 5 blue pens in a box. How many pens are in the box? Write an addition fact to show the problem. Circle two addends to add first. Write the sum.

___ + ___ + ___ = ___

____ pens

Answer:

Explanation:

4 + 5 + 5 = 14

There are 14 pens in the box.

**Choose two addends to odd first. Circle the addends. Write the sum.**

Question 2.

3 + 2 + 6 = ___

Answer:

Explanation:

The sum of 3, 2 and 6 is 11.

Question 3.

5 + 1 + 3 = ___

Answer:

Explanation:

The sum of 5, 1 and 3 is 9.

**On Your Own**

**Write an addition fact to show the problem. Circle two addends to add first. Write the sum. Solve.**

Question 4.

**Use Repeated Reasoning** There are 4 rulers on the art table, 6 rulers on the math table, and 3 rulers on the science table. How many rulers are there?

___ + _____ + ____ = ____

_____ rulers

Answer:

Explanation:

The sum of 4, 6 and 3 is 13

There are 13 rulers.

Question 5.

**Use Structure** Nico folds 3 blue shirts, 2 red shirts, and 7 white shirts. How many shirts does Nico fold?

___ + ___ + ___ = ____

___ shirts

Answer:

Explanation:

The sum of 3, 2 and 7 is 12

Nico folded 12 shirts.

**Attend to Precision** Choose two addends to add first. Circle the addends. Write the sum.

Question 6.

7 + 2 + 2 = ___

Answer:

Explanation:

The sum of 7, 2 and 2 is 11.

Question 7.

0 + 6 + 9 = ___

Answer:

Explanation:

The sum of 0, 6 and 9 is 15.

Question 8.

5 + 0 + 7 = ___

Answer:

Explanation:

The sum of 5, 0 and 7 is 12.

Question 9.

4 + 5 + 1 = ___

Answer:

Explanation:

The sum of 4, 5 and 1 is 10.

**I’m in a Learning Mindset!**

How could I solve Problem 4 a different way?

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