This handy Math in Focus Grade 1 Workbook Answer Key Cumulative Review Chapters 3 and 4 detailed solutions for the textbook questions.

## Math in Focus Grade 1 Cumulative Review Chapters 3 and 4 Answer Key

**Concepts and Skills**

**Look at the pictures. Complete the number sentences.**

Question 1.

Answer:

Explanation:

8 breads are colored and baked 2 breads are not colored and baked

so, total number of breads baked are = 8 + 2 = 10

Question 2.

Answer:

Explanation:

In a ten frame there are 9 dots in that 4 are crossed

so, 9 – 4 = 5

**Complete the number bonds. Fill in the blanks.**

Question 3.

___ + 5 = 10

Answer:

Explanation:

The sum of 5 and 5 is 10

that is stated by number bond

Question 4.

8 – 3 = ___

Answer:

Explanation:

The difference of 8 and 3 is 4

that is stated by number bond

**Fill in the blanks.**

Question 5.

2 more than 8 is ____

Answer:

10

Explanation:

2 more than 8 is number 10

2 + 8 = 10

Question 6.

3 less than 7 is ___.

Answer:

4

Explanation:

3 less than 7 is number 4

7 – 3 = 4

Question 7.

_______ is 2 more than 5.

Answer:

7

Explanation:

2 + 5 = 7

number 7 is 2 more than 5.

Question 8.

________ is 5 less than 10.

Answer:

5

Explanation:

10 – 5 = 5

number 5 is 5 less than 10.

**Find the missing number.**

**Use related facts to help you.**

Question 9.

2 + ______ = 8

Answer:

6

Explanation:

The sum of 2 and 6 is 8

2 + 6 = 8

Question 10.

______ – 6 = 0

Answer:

6

Explanation:

6 – 6 = 0

The difference of 6 and 6 is 0

**Pick three numbers and make a fact family.**

Question 11.

Answer:

Explanation:

An addition fact is defined as the sum of two one-digit addends

**Problem Solving**

**Look at the pictures.**

**Write an addition or subtraction story.**

Question 12.

Answer:

Explanation:

There are different shapes of buttons

in them 5 are colored and 4 are non colored

so, total number of buttons are 9

5 + 4 = 9

Question 13.

Answer:

Explanation:

Jamel is catching 9 balloons

3 flew away

so, 9 – 3 = 6

6 are left.

**Solve.**

**Write addition or subtraction sentences.**

Question 14.

Ellen has 3 spoons. Her sister gives her 5 spoons. How many spoons does Ellen have now?

Ellen has ___ spoons now.

Answer:

Explanation:

Ellen has 3 spoons. Her sister gives her 5 spoons.

Ellen has 8 spoons now.

3 + 5 = 8

Question 15.

There are 8 fish in a fish tank. 6 are angelfish and the rest are goldfish. How many goldfish are there?

There are ___ goldfish.

Answer:

Explanation:

There are 8 fish in a fish tank. 6 are angelfish and the rest are goldfish.

8 – 6 = 2

There are 2 goldfish.