We included **H****MH Into Math Grade 1 Answer Key**** PDF** **Module 2 Lesson 6 Choose a Strategy to Subtract** to make students experts in learning maths.

## HMH Into Math Grade 1 Module 2 Lesson 6 Answer Key Choose a Strategy to Subtract

I Can choose a strategy to solve a subtraction problem.

**Step It Out**

Eduardo has 14 pens. 6 are blue. The rest are red. How many pens are red?

14 – 6 =

1. One way: Count more to make a ten.

A. Start with 6. Count ___ to make 10. Then count ___ more to make 14•

B. How many more did you count in all? ___

C. So, 14 – 6 = ___

Answer:

14 – 6 = 8

Explanation:

Eduardo has 14 pens. 6 are blue. The rest are red

Start at 6

Count 4 more to make 10. Then count 4 more to make 14

I counted 8 in all

So, 14 – 6 = 8.

2. Another way: Subtract to make a ten.

A. THINK: I need to subtract 6 in all. Subtract 4 from 14 to make a ten. Then subtract 2 more.

B. Solve the new equation.

C. So, 14 – 6 = ____

D. ___ pens are red.

Answer:

Explanation:

Make ten

14 – 4 = 10

10 – 2 = 8

So, 14 – 6 = 8.

**Step It Out**

11 balloons are the air. 8 fall down. The rest go up. How many balloons go up?

3. One way: Add to subtract 11—8.

A. THINK: If I have 8, how many more to make 11 ?

8 + ___ = ___

B. So, 11 – 8 = __

Answer:

11 balloons are the air. 8 fall down. The rest go up

If I have 8, how many more to make 11 ?

8 + 3 = 11

So, 11 – 8 = 3.

4. Another way: Count on to subtract 11 – 8.

A. Start with 8. Count on to 11.

How many did you count on? ___

B. So, 11 – 8 = __

C. ___ balloons go up.

Answer:

I start with 8

Count on to 11

I counted 3

So, 11 – 8 = 3

So, 3 balloons go up.

**Turn and Talk** Is there another way you can subtract 11 – 8? Explain.

Brianna picks 8 apples. She gives 2 apples away. How many apples does she have now?

5. Count back to subtract 8 – 2.

A. Start on ___. Count back ___.

B. Draw the jumps on the number line. What number do you land on? ___

C. So, 8 – 2 = __

D. Brianna has ___ apples now.

Answer:

Explanation:

Brianna picks 8 apples

She gives 2 apples away

Start on 8

Count back 2

I reach at 6

So, 8 – 2 = 6

Therefore, Brianna has 6 apples now.

**Check Understanding Math Board**

**Use any strategy to solve. Write the equation.**

Question 1.

Nate has 14 apples. He gives 5 of them to friends. How many apples does he have now?

___ – ___ = ____

Nate has ___ apples now.

Answer:

14 – 5 = 9

Nate has 9 apples now.

Explanation:

I start with 5

Count on to 14

I counted 9

So, 14 – 5 = 9

therefore, Nate has 9 apples now.

**On Your Own**

Question 2.

**Model with Mathematics** Lynn has 16 balloons. 7 are blue. The rest are pink. How many balloons are pink? Draw to show your work. Write the equation.

____ – ___ = ___

___ balloons are pink.

Answer:

Explanation:

Eduardo has 16 pens. 7 are blue. The rest are pink

Start at 7

Count 3 more to make 10. Then count 6 more to make 16

I counted 9 in all

So, 16 – 7 = 9

Therefore, 9 balloons are pink.

Question 3.

**Use Tools** Meghan picks 10 tomatoes. Then she gives 2 tomatoes away. How many tomatoes does she have now? Draw jumps on the number line to solve.

Meghan has ____ tomatoes now.

Answer:

Explanation:

Meghan picks 10 tomatoes

Then she gives 2 tomatoes away

Start at 10

Counted back 2

I reached at 8

So, 10 – 2 = 8

therefore, Meghan has 8 tomatoes now.

**Use any strategy to subtract.**

Question 4.

12 – 5 = ___

Answer:

12 – 5 = 7

Explanation:

Make 10:

12 – 5 =

12 – 2 – 3 =

10 – 3 = 7

So, 12 – 5 = 7.

Question 5.

16 – 8 = __

Answer:

16 – 8 = 8

Explanation:

Start at 8

Count up till16

I counted 8 more

So, 16 – 8 = 8.

Question 6.

13 – 9 = ___

Answer:

13 – 9 = 4

Explanation:

Start at 13

Count back 9

I reach at 4

So, 13 – 9 = 4.

**Use any strategy to solve. Write the equation.**

Question 7.

A squirrel hides 17 acorns in the ground. Later, the squirrel digs up 9 of them. How many acorns are in the ground now?

___ – ___ = ___

___ acorns are in the ground now.

Answer:

17 – 9 = 8

8 acorns are in the ground now.

Explanation:

A squirrel hides 17 acorns in the ground

Later, the squirrel digs up 9 of them

Start at 9

Count till 17

I counted 8 more

So, 17 – 9 = 8

Therefore, there are 8 acorns in the ground now.

Question 8.

Brianna studies the weather for 12 days. 3 days are rainy. The rest are sunny. How many days are sunny?

___ – ___ = ___

___ days are sunny.

Answer:

12 – 3 = 9

9 days are sunny

Explanation:

Brianna studies the weather for 12 days

3 days are rainy

Start at 12

Count back 3

I reach at 9

So, 12 – 3 = 9

Therefore, 9 days are sunny.

Question 9.

**Model with Mathematics** Jessica has 9 marbles. 6 are green. The rest are blue. How many blue marbles does she have?

___ – ___ = ___

___ blue marbles

Answer:

9 – 6 = 3

3 blue marbles

Explanation:

Jessica has 9 marbles

6 are green

The rest are blue

Start at 6

Count on till 9

I counted 3 more

So, 9 -6 = 3

therefore, there are 3 blue marbles.

**Use any strategy to subtract.**

Question 10.

11 – 2 = ___

Answer:

11 – 2 = 9

Explanation:

Start at 11

Count back 2

I reach at 9

So, 11 -2 = 9.

Question 11.

___ = 14 – 7

Answer:

14 – 7 = 7

Explanation:

Make Ten:

14 – 7 =

14 – 4 – 3 =

10 – 3 = 7

So, 14 – 7 = 7.

**On your Own**

**Use any strategy to solve. Write the equation.**

Question 12.

**Model with Mathematics** Norbert collects 9 toy trains. He gives 2 of them away. How many toy trains does he have now?

___ – ___ =___

___ toy trains

Answer:

9 – 2 = 7

7 Toy trains

Explanation:

Norbert collects 9 toy trains

He gives 2 of them away

Start at 9

Count back 2

I reach at 7

So, 9 – 2 = 7.

Question 13.

**Attend to Precision** Draw to show a way to subtract 12 – 7. Then write to explain your strategy.

Answer:

Explanation:

Make Ten to subtract:

12 – 7 =

12 – 2 – 5

10 – 5 = 5

So, 12 – 7 = 5.