Doubles Addition

Double of something refers to twice of something.

Doubles addition means to add the same number twice, for example 2 + 2 equals 4, that is the double of 2 is four. These are also known as double facts.

Knowing double facts can sometimes help in quickly solving other addition and subtraction problems.

The video above includes examples of doubles addition along with the visual representation.

Image given below shows an example of doubles addition.

Practice Examples (Answers below)

1) 5 + 5 = ?

2) 6 + 6 = ?

3) 7 + 7 = ?

4) 8 + 8 = ?

5) 9 + 9 = ?

6) 10 + 10 = ?

7) 11 + 11 = ?

8) 12 + 12 = ?

9) 13 + 13 = ?

10) 14 + 14 = ?

11) 15 + 15 = ?

12) 16 + 16 = ?

13) 17 + 17 = ?

14) 18 + 18 = ?

15) 19 + 19 = ?

16) 20 + 20 = ?

Answers

1) 5 + 5 = 10

2) 6 + 6 = 12

3) 7 + 7 = 14

4) 8 + 8 = 16

5) 9 + 9 = 18

6) 10 + 10 = 20

7) 11 + 11 = 22

8) 12 + 12 = 24

9) 13 + 13 = 26

10) 14 + 14 = 28

11) 15 + 15 = 30

12) 16 + 16 = 32

13) 17 + 17 = 34

14) 18 + 18 = 36

15) 19 + 19 = 38

16) 20 + 20 = 40