This handy Math in Focus Grade 1 Workbook Answer Key Chapter 3 Addition Facts to 10 detailed solutions for the textbook questions.

## Math in Focus Grade 1 Chapter 3 Answer Key Addition Facts to 10

**Math Journal**

**Write your own addition story. Use the helping words.**

Explanation:

Framed a question by using the given vocabulary

and formed an equation based on the story.

**Put on your Thinking Cap!**

**Challenging Practice**

**Solve.**

Ivy and Reena have 10 prizes in all. They do not have the same number of prizes. How many prizes can Reena have?

Reena can have ___ prizes.

Put on Your Thinking Cap!

Problem Solving

Solve.

Answer:

Ivy and Reena have 10 prizes in all. They do not have the same number of prizes.

so, 6 and 4 let us assume

6 + 4 = 10

Reena can have 6 prizes.

Lilian has these candles. Help her choose the correct number candle for her friend’s birthday.

- Cross out two numbers that add up to 5.
- Cross out two numbers that add up to 10.
- Look at the two numbers that are left.

Cross out the number that is the least.

The correct number candle is ____

Answer:

The correct number candle is 7

Explanation:

2 + 3 = 5

so, crossed 2 and 3

6 + 4 = 10

so, crossed 6 and 4

remaining are 5 and 7

In that least is 5 so crossed that

remaining is 7

**Chapter Review/Test**

**Vocabulary**

**Choose the correct word.
**

Question 1.

You can ____ by counting on from the greater number.

Answer:

Add

Explanation:

You can add by counting on from the greater number.

Question 2.

2 + 3 = 5 is an ____

Answer:

Addition sentence

Explanation:

An addition sentence is a number sentence or simply an equation used to express addition.

Question 3.

3 plus 4 is ____ 7.

Answer:

Equal to

Explanation:

3 + 4 = 7

The sum of 3 and 4 is 7

Question 4.

“+” is read as ____

Answer:

plus

Explanation:

The addition is represented with + symbol

Question 5.

6 is 2 ___ 4.

Answer:

more than

Explanation:

6 is 2 more than 4.

4 + 2 = 6

**Concepts and Skills**

**Add by counting on from the greater number.**

Question 6.

3 + 6 = ___

Answer:

9

Explanation:

The sum of 3a nd 6 is 9

Question 7.

7 + 1 = ____.

Answer:

8

Explanation:

7 + 1 = 8

The sum of 7 and 1 is 8

Question 8.

2 + 8 = ___

Answer:

10

Explanation:

2 + 8 = 10

The sum of 2 and 8 is 10

Question 9.

1 + 9 = ___

Answer:

10

Explanation:

The sum of 1 and 9 is 10

1 + 9 = 10

**Fill in the blanks.**

Question 10.

____ is 3 more than 6.

Answer:

9

Explanation:

9 is 3 more than 6.

6 + 3 = 9

Question 11.

____ is 2 more than 5.

Answer:

7

Explanation:

7 is 2 more than 5.

5 + 2 = 7

Question 12.

___ is 4 more than 4.

Answer:

8

Explanation:

8 is 4 more than 4.

**Look at the pictures. Fill in the blanks.**

Question 13.

Answer:

Explanation:

An addition fact is the sum of two specific addends that will always equal the same result. 2 + 2 will always equal four. 7 + 8 will always equal 15.

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

Question 14.

Answer:

Explanation:

An addition fact is the sum of two specific addends that will always equal the same result. 2 + 2 will always equal four. 7 + 8 will always equal 15.

**Problem Solving**

**Solve.**

Question 15.

Carlos has 3 brown belts. He has 2 black belts. How many belts does he have in all?

3 + 2 = ___

Carlos has ___ belts in all.

Answer:

3 + 2 = 5

Carlos has 5 belts in all.

Explanation:

Carlos has 3 brown belts. He has 2 black belts.

3 + 2 = 5

An addition fact is the sum of two specific addends that will always equal the same result. 2 + 2 will always equal four. 7 + 8 will always equal 15.

Question 16.

Jane has 4 bows. She gets 3 more bows. How many bows does she have now?

4 + 3 = ___

Jane has __ bows now.

Answer:

4 + 3 = 7

Jane has 7 bows now.

Explanation:

Jane has 4 bows. She gets 3 more bows.

4 + 3 = 7

An addition fact is the sum of two specific addends that will always equal the same result. 2 + 2 will always equal four. 7 + 8 will always equal 15.

**Draw **

**Then Solve.**

Question 17.

How many toys are there ¡n all?

3 + _____ = _____

There are ___ toys in all.

Answer:

Explanation:

5 + 3 = 8

There are 3 duck toys and 5 teddy toys

The are 8 toys in all

**Look at the in question 17 to answer the questions.**

**Circle the correct answer.**

Question 18.

a.

Answer:

Teddys

Explanation:

There are 3 duck toys and 5 teddy toys

5 > 3

so, teddy are more

b. How many more?

5 is more than 3.

Answer:

5 – 3 = 2

2 more.

Explanation:

There are 3 duck toys and 5 teddy toys

there are 2 more teddy than duck.