We included **H****MH Into Math Grade 1 Answer Key**** PDF** **Module 3 Lesson 5 Add 3 Numbers to Solve Problems** to make students experts in learning maths.

## HMH Into Math Grade 1 Module 3 Lesson 5 Answer Key Add 3 Numbers to Solve Problems

I Can find the sum of three numbers to solve word problems.

**Step It Out**

1. A plant has 5 leaves at the top, 2 leaves in the middle, and I leaf at the bottom. How many leaves does the plant have?

A. Use objects to show the problem.

THINK: I can connect cubes to show each addend.

B. Group the two addends you will add first. Draw to show what you did.

Answer:

C. Write to solve the problem.

__ + ___ +__________=

The plant has ___ leaves.

Explanation:

A plant has 5 leaves at the top, 2 leaves in the middle, and I leaf at the bottom

5 + 2 + 1 =

First add 5 and 2

5 + 2 = 7

Then add 7 and 1

7 + 1 = 8

So, 5 + 2 + 1 = 8

Therefore, the plants have 8 leaves.

**Step It Out**

2. Joe has 2 cats. Dawn has 2 cats. Sandy has 6 cats. How many cats do they have altogether?

Decide which addends you will add together first.

A. Here is one way. THINK: Add doubles.

Explanation:

Joe has 2 cats. Dawn has 2 cats. Sandy has 6 cats

Add first 2 addends first and then add their sum and the third number

2 + 2 = 4

4 + 6 = 10

So, 2 + 2 + 6 = 10

B. Here is another way. ThINK: Count on 2.

Explanation:

Joe has 2 cats. Dawn has 2 cats. Sandy has 6 cats

Add 2 + 6 = 8

Then add 2 and 8

2 + 8 = 10

So, 2 + 2 + 6 = 10

C. Joe, Dawn and Sandy have ___ cats.

Explanation:

2 + 2+ 6 = 10

Therefore, Joe, Dawn and Sandy have 10 cats.

**Check Understanding Math Board**

**Solve. Draw to show your work.**

Question 1.

There is 1 deer, 3 rabbits, and 7 birds at the pond. How many animals are at the pond?

____ animals

Answer:

Explanation:

There is 1 deer, 3 rabbits, and 7 birds at the pond

1 + 3 + 7 =

Add 1 and 3

1 + 3 + 7 =

4 + 7 = 11

1 + 3 + 7 = 11

So, there are 11 animals at the pond.

**On Your Own**

**Solve. Draw or write to show your thinking.**

Question 2.

**Reason** Bashir sees 2 striped kites, I red kite, and 3 blue kites in the sky. How many kites does he see?

____ kites

Answer:

Explanation:

Bashir sees 2 striped kites, I red kite, and 3 blue kites in the sky

2 + 1 + 3 =

Add 2 and 1

2 + 1 + 3 =

3 + 3 = 6

2 + 1 + 3 = 6

So, Bashir has 6 kites.

Question 3.

**Reason** Cole has 5 green marbles, 4 red marbles, and 5 purple marbles. How many marbles does he have?

____ marbles

Answer:

Explanation:

Cole has 5 green marbles, 4 red marbles, and 5 purple marbles

5 + 4 + 5 =

Add 5 and 4

5 + 4 + 5 =

9 + 5 = 14

5 + 4 + 5 = 14

So, Cole have 14 marbles.

Question 4.

**Model with Mathematics** Paul, Vicki, and Beth each scored 3 goals at soccer practice. How many goals did they score? Complete the equations to solve.

____ goals

Answer:

Explanation:

Paul, Vicki, and Beth each scored 3 goals at soccer practice

I wrote the way i add the first two addends and then add their sum with the third addend

3 + 3 + 3 =

6 + 3 = 9

So, 3 + 3 + 3= 9

Therefore, They made 9 goals.

**On Your Own**

**Solve.**

Question 5.

Sam stacks 8 large boxes, 2 medium boxes, and 1 small box. How many boxes does she stack?

___ boxes

Answer:

Explanation:

Sam stacks 8 large boxes, 2 medium boxes, and 1 small box

I wrote the way i add the first two addends and then add their sum with the third addend

8 + 2 + 1 =

10 + 1 = 11

So, 8 + 2 + 1 = 11

Therefore, Sam have 11 boxes.

Question 6.

Tonya has 4 stamps from countries in Asia, 5 stomps from countries in Africa, and 1 stamp from a country in Europe. How many stamps does she have?

_____ stamps

Answer:

Explanation:

Tonya has 4 stamps from countries in Asia, 5 stomps from countries in Africa, and 1 stamp from a country in Europe

I wrote the way i add the first two addends and then add their sum with the third addend

4 + 5 + 1 =

9 + 1 = 10

So, 4 + 5 + 1 = 10

Therefore, Tonya have 10 stamps.

Question 7.

**Reason** Find the unknown addend. Complete the equation.

1 + 3 + = 5

1 + 3 + ___ = 5

Answer:

1 + 3 + = 5

Explanation:

As we know 1 + 3 = 4

4 + = 5

Subtract 4 from 5

5 – 4 = 1

So, 4 + 1 = 5

Therefore, the unknown number is 1.

Question 8.

**Open Ended** Write and solve a word problem that adds 3 numbers.

______________________

______________________

___ = ___ + ___ + ___

Answer:

Joy, Vicki and Paul scored 2 , 3 and 4 runs in a game. How many did they score all together?

Solve.

Explanation:

Joy, Vicki and Paul scored 2 , 3 and 4 runs in a game

I wrote the way i add the first two addends and hen add their sum with the third addend

2 + 3 + 4 =

5 + 4 = 9

So, 2 + 3 + 4 = 9

Therefore, They scored 9 runs all together.