We included **H****MH Into Math Grade 1 Answer Key**** PDF** **Module 2 Lesson 4 Add to Subtract** to make students experts in learning maths.

## HMH Into Math Grade 1 Module 2 Lesson 4 Answer Key Add to Subtract

I Can use addition to solve a subtraction problem.

**Spark Your Learning**

Elena has 7 apples. Ian has 1 apple. Elena gives 6 of her apples to Ian. How can you show the number of apples each child has now?

Answer:

Explanation:

Elena has 7 apples. Ian has 1 apple

Elena gives 6 of her apples to Ian

I drew counters to show

7 – 6 = 1

Elena have 1 apple now

1 + 6 = 7

Ian have 7 apples now.

Read the problem aloud. Have pairs work together to show and solve the problem. Then invite children to tell what they notice about the numbers in the addition and subtraction equations.

**Build Understanding**

Helena has 8 oranges. 5 are in a bag. The rest are in a bowl. How many oranges are in a bowl?

8 – 5 =

A. How can you show the problem as addition?

Answer:

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

___ + ___ = ___

C. So, 8 – 5 = ___

D. There are ___ oranges in the bowl.

Explanation:

There are 8 oranges in all

There are 5 in bag

THINK: If I have 5, how many more to make 8?

5 + 3 = 8

Use the addition fact to help subtract.

8 – 5 = 3

So, there are 3 oranges in the bowl.

**Turn and Talk** How did adding help you to subtract 8 – 5? Explain.

**Step It Out**

1. Trino writes 10 postcards. 6 are in the mail. The rest are on her desk. How many postcards are on her desk?

Use addition to subtract 10 – 6.

A. THINK: If I have 6, how many more to make 10?

6 + __ = 10

B. Use the addition fact to help subtract.

So, 10 – 6 = ___.

C. ____ postcards are on her desk.

Answer:

Trino writes 10 postcards. 6 are in the mail

The rest are on her desk

THINK: If I have 6, how many more to make 10?

6 + 4 = 10

Use the addition fact to help subtract.

So, 10 – 6 = 4

Therefore, there are 6 postcards on the desk.

**Check Understanding Math Board**

**Add to subtract. Use or if you need to.**

Question 1.

Vito has 12 seashells. 5 are big. The rest are small. How many small seashells does he have?

12 – 5 =

5 + ___ = 12

So, 12 – 5 = __

___ small seashells

Answer:

7 small seashells

Explanation:

12 – 5 =

THINK: If I have 5, how many more to make 12?

5 + 7 = 12

Use the addition fact to help subtract.

So, 12 – 5 = 7

Therefore, there are 7 small seashells.

**On Your Own**

**Add to subtract. Use or if you need to.**

2. Sophia makes 7 candles. 4 are tall. The rest are short. How many short candles does she make?

7 – 4 =

4 + __ = 7

So, 7 – 4 = __.

___ short candles

Answer:

3 short candles

Explanation:

7 – 4 =

THINK: If I have 4, how many more to make 7?

4 + 3 = 7

Use the addition fact to help subtract.

7 – 4 = 3

Therefore, there are 3 short candles.

**Write addition and subtraction equations to solve.**

Question 3.

**Model with Mathematics** Fred has 16 bells. 8 of the bells are blue. The rest are purple. How many purple bells does he have?

___ + ___ = ___

So, ___ – ___ = ___

____ purple bells

Answer:

8 purple candles

Explanation:

16 – 8 =

THINK: If I have 8, how many more to make 16?

8 + 8 = 16

Use the addition fact to help subtract.

So, 16 – 8 = 8

Therefore, Fred have 8 purple bells.

**I’m in a Learning Mindset!**

Who should I talk with to learn more about using addition facts to help me subtract?

____________________________