This handy Math in Focus Grade 1 Workbook Answer Key Chapter 4 Subtraction Facts to 10 detailed solutions for the textbook questions.

## Math in Focus Grade 1 Chapter 4 Answer Key Subtraction Facts to 10

**Math Journal**

**Color some bunnies brown. Then make a subtraction sentence.**

Question 1.

Sally has 9 bunnies.

_______ bunnies are brown.

How many bunnies are white?

________ bunnies are white.

Answer:

Explanation:

Sally has 9 bunnies.

9 bunnies are brown.

9 – 9 = 0

There are 0 bunnies which are white.

**Draw some balls ¡n the drawer.**

**Cross some out.**

**Then make a subtraction sentence.**

Question 2.

Jane has ________ balls.

Her dog chews _______ of the balls.

How many balls does she have left?

Jane has _______ balls left.

Answer:

Explanation:

Jane has 6 balls.

Her dog chews 2 of the balls.

6 – 2 = 4

The dog left 4 balls.

**Put On Your Thinking cap!**

**challenging practice**

**Pick three numbers to make a fact family. Then write each fact family.**

Question 1.

Answer:

Explanation:

An addition fact is the sum of two specific addends that will always equal the same result.

A subtraction fact family is a group of related math facts that use the same three numbers. Subtraction fact families also include addition, which is the inverse or opposite operation of subtraction.

Question 2.

Answer:

Explanation:

An addition fact is the sum of two specific addends that will always equal the same result.

A subtraction fact family is a group of related math facts that use the same three numbers. Subtraction fact families also include addition, which is the inverse or opposite operation of subtraction.

**Put On Your Thinking Cap!**

**Problem Solving**

**Read this riddle.**

Example

I think of two numbers.

When I add the numbers, the answer is 5.

0 + 5 = 5

1 + 4 = 5

2 + 3 = 5

When I subtract the numbers, the answer is 1.

5 – 0 = 5 ✗

4 – 1 = 3 ✗

3 – 2 = 1 ✓

What are the two numbers?

The two numbers are 2 and 3.

Now you try.

I think of two numbers.

When I add the numbers, the answer is 8.

When I subtract the numbers, the answer is less than 6.

What can the two numbers be?

The two numbers can be ___ and ____

Answer:

6 and 2

Explanation:

Let the 2 numbers are 2 and 6

2 + 6 = 8

6 – 2 = 4

4 < 6

so, My numbers satisfy all the conditions.

**Chapter Review/Test**

**Vocabulary
**

**Choose the correct word.
**

Question 1.

+ is plus, – is ____

Answer:

Minus

Explanation:

+ is plus, – is minus

they are the symbols used for representing addition and subtraction.

Question 2.

3 is ___ 7.

Answer:

Less than

Explanation:

number 3 is lesser than 7

3 < 7

Question 3.

8 – 2 means to ___ 2 from 8.

Answer:

Take away

Explanation:

If we take away 2 from 8 then the difference is 6

8 – 2 = 6

Question 4.

4 – 3 = 1 is a ____

Answer:

Subtraction sentence.

Explanation:

An subtraction sentence is a number sentence or simply an equation used to express subtraction. For example, 5 – 3 = 2 is a subtraction sentence.

**Concepts and Skills**

**Complete each subtraction sentence.**

Question 5.

Answer:

8 – 3 = 5

Explanation:

There are 8 balls from that 3 are used

8 – 3 = 5

so, 5 are un used balls.

Question 6.

What is 4 less than 6?

Answer:

6 – 4 = 2

Explanation:

4 less than 6 is 2

In a ten frame there are 6 dots from that 4 are crossed

so, 2 are remaining.

Question 7.

What is 3 less than 9?

9 – ___ = ___

Answer:

9 – 3 = 6

Explanation:

3 less than 9 is 6

In a ten frame there are 9 dots from that 3 are crossed

so, 6 are remaining.

**Count on from the number which is less.**

Question 8.

6 – 3 = ___

Answer:

3

Explanation:

6 – 3 = 3

The difference of 6 and 3 is 3

Question 9.

9 – 7 = ___

Answer:

2

Explanation:

9 – 7 = 2

The difference of 9 and 7 is 2

**Count back from the greater number.**

Question 10.

10 – 5 = ___

Answer:

5

Explanation:

10 – 5 = 5

The difference of 10 and 5 is 5

Question 11.

7 – 6 = ___

Answer:

1

Explanation:

7 – 6 = 1

The difference of 7 and 6 is 1

**Complete the number bond.**

**Then complete the subtraction sentence.**

Question 12.

7 – 2 = ?

Answer:

Explanation:

The number bond explains the subtraction sentence

7 – 2 = 5

Question 13.

? – 2 = 8

Answer:

Explanation:

The number bond explains the subtraction sentence

10 – 2 = 8

Subtract.

**Use related facts.**

Question 14.

8 – 4 = ___

Answer:

4

Explanation:

8 – 4 = 4

The difference of 8 and 4 is 4

Question 15.

7 – 3 = ___

Answer:

4

Explanation:

7 – 3 = 4

The difference of 7 and 3 is 4

Question 16.

10 – ___ = 7

Answer:

3

Explanation:

10 – 3 = 7

The difference of 10 and 7 is 3

Question 17.

5 – ___ = 5

Answer:

0

Explanation:

5 – 0 = 5

The difference of 5 and 0 is 5

**Write a subtraction story.**

Question 18.

Answer:

Explanation:

9 – 5 = 4

For the subtraction sentence created a subtraction story.

**Write a fact family.**

Question 19.

Answer:

Explanation:

An addition fact is the sum of two specific addends that will always equal the same result.

A subtraction fact family is a group of related math facts that use the same three numbers. Subtraction fact families also include addition, which is the inverse or opposite operation of subtraction.

**Problem Solving.**

**Draw **

**Cross them out to solve.**

**Then write a number sentence.**

Question 20.

James has 9 fish in his fish tank. He gives his friend 4 fish. How many fish does he have left?

____ – ___ = ____

James has ___ fish left.

Answer:

Explanation:

James has 9 fish in his fish tank. He gives his friend 4 fish.

9 – 4 = 5

James has 5 fish left.

**Solve.**

**Use related facts to help you.**

Question 21.

Mr. Peterson bakes 10 pies. He eats some of them. He now has 8 pies. How many pies did he eat?

10 – ___ = 8

Mr. Peterson ate ____ pies.

Answer:

10 – 2 = 8

Explanation:

10 – 8 = 2

Mr. Peterson bakes 10 pies. He eats some of them. He now has 8 pies.

10 – 2 = 8

Mr. Peterson ate 2 pies.