We included **HMH Into Math Grade 2 Answer Key PDF** **Module 2 Lesson 4 Add to Find the Total Number of Objects in Arrays** to make students experts in learning maths.

## HMH Into Math Grade 2 Module 2 Lesson 4 Answer Key Add to Find the Total Number of Objects in Arrays

I Can write an addition equation to find the total number of objects in equal groups.

**Spark Your Learning**

Use tools to show how Lily can put her books in equal rows. Show how you can add to find the total number of books.

Answer:

Explanation:

Lily can put her books in 3 rows of books and 2 books in each row.

Read the following: Lily wants to put her 6 books in equal rows. Use tools to show how she can do this. Then show how you can add to find the total number of books.

**Build Understanding**

Greyson puts his toy trains in rows. How many trains does he have?

A. How can you use tools to show Greyson’s trains?

Answer:

B. How many rows of trains are there?

____ rows of trains

C. How many trains are in each row?

___ trains in each row

D. How can you write an addition equation to show how many trains Greyson has?

____ + ___ = ____

E. How many trains does Greyson have? ______ trains

Explanation:

2 rows of train

5 trains in each row

5 + 5 = 10

Greyson has 10 trains in all.

**Turn and Talk** How did the number of rows of toy trains help you write the addition equation? Explain.

**Step It Out**

1. Oliver collects slickers. How many smiley face stickers does he have?

A. Find the number of rows of stickers.

____ rows

B. Find the number of stickers in each row.

___ stickers in each row

C. Write an addition equation to find the total number of stickers.

___ + ___ + ___ + ___ = ____

D. Solve.

Oliver has ___ smiley face slickers.

Answer:

4 rows

5 stickers in each row

5 + 5 + 5 + 5 = 20

Oliver has 20 smiley face stickers.

**Check Understanding Math Board**

Question 1.

Nora drew these triangles. Find the number of rows and the number of triangles in each row. Then write an addition equation to find the total number of triangles.

____ rows

____ triangles in each row

___ + ___ + ___ + ____ = ____

____ triangles

Answer:

4 rows

2 triangles in each row

2 + 2 + 2 + 2 = 8

8 triangles

Explanation:

There are 8 triangles in all.

**On Your Own**

Question 2.

**Use Structure** Ryan puts some crackers on a tray. He puts the crackers in 3 rows. Each row has 5 crackers. How many crackers are there? Draw the crackers. Write an addition equation to solve the problem.

___ + ___ + ___ = ____ ____ crackers

Answer:

5 + 5 + 5 = 15 crackers

Explanation:

Ryan puts some crackers on a tray.

He puts the crackers in 3 rows.

Each row has 5 crackers

5 + 5 + 5 = 15 crackers.

**Model with Mathematics** Find the number of rows and the number of objects in each row. Then write an addition equation to find the total.

Question 3.

Answer:

4 rows

4 circles in each row

4 + 4 + 4 + 4 = 16

Explanation:

There are 16 circles in all.

Question 4.

Answer:

3 rows

4 stars in each row

4 + 4 + 4 = 12

Explanation:

There are 12 stars in all.

**I’m in a Learning Mindset!**

What did I learn in addition to what was taught in the lesson?

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