Practice the problems of Math in Focus Grade 1 Workbook Answer Key Chapter 8 Practice 3 Ways to Add to score better marks in the exam.

## Math in Focus Grade 1 Chapter 8 Practice 3 Answer Key Ways to Add

**Complete each addition sentence.**

Example

What is double 1?

Double 1 means to add __1__ more to 1.

1 + __1__ = __2__

Question 1.

What is double 2?

Double 2 means to add ___ more to 2.

___ + ___ = ____

Answer:

Double 2 means to add 2 more to 2.

2 + 2 = 4

Question 2.

What is double 3?

Double 3 means to add ___ more to 3.

____ + ___ = ___

Answer:

Double 3 means to add 3 more to 3.

3 + 3 = 6

Question 3.

4 + 4 = ____

Answer: 8

Question 4.

5 + 5 = ____

Answer: 10

**Complete each addition sentence.**

Question 5.

a. 3 + 3 = ____

3 + 4 = ____

Answer:

3 + 3 = 6

3 + 4 = 7

b. 3 + 3 is double ____

3 + 4 is double ____ plus ____

Answer:

3 + 3 is double 6

3 + 4 is double 6 plus 1

**Complete the number bonds. Then fill in the blanks.**

Example

Question 6.

Answer:

Question 7.

Answer:

**Use doubles facts to complete the addition sentences.**

Example

Question 8.

Answer: 0 + 0 = 0

Question 9.

Answer: 6 + 6 = 12

Question 10.

Answer: 5 + 5 = 10

Question 11.

Answer: 8 + 8 = 16

Question 12.

Answer: 9 + 9 = 18

Question 13.

Answer: 10 + 10 = 20

**Add the doubles-plus one numbers. Use doubles facts to help you. Then write the doubles fact you used.**

Example

5 + 6 = __11__

Doubles fact: __5__ + __5__ = __10__

Question 14.

7 + 6 = ____

Doubles fact: ___ + ____ = _____

Answer:

7 + 6 = 13

Doubles fact: 6 + 6 = 12

Question 15.

7 + 8 = ____

Doubles fact: ___ + ____

Answer:

7 + 8 = 15

Doubles fact: 7 + 7 = 14

Question 16.

9 + 10 = ____

Doubles fact: ___ + ____

Answer:

9 + 10 = 19

Doubles fact: 9 + 9 = 18

Question 17.

8 + 9 = ____

Doubles fact: ___ + ____

Answer:

8 + 9 = 17

Doubles fact: 8 + 8 = 16

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