In math adding doubles plays an important role for the kids to know addition facts. This activity increases the math skills in adding the numbers. Adding a number with the same number makes the addition doubles.

**Memorize the following table based on adding doubles:**

**Note:** Take the print out of this table based on adding doubles and hang on the wall or make small pieces of cards so that kids can easily learn the addition facts on doubles.

**H****ow adding doubles
is same as multiplying by two?**

Learn the two actions which are similar in both the ways because when we multiply a number by 2 we are just doubling the number being multiplied by two.

**Consider the following
numbers in both the ways in doubling and multiplying by 2 from 0 - 10:**

zero plus zero = zero **OR** 2 × 0 = 0

one plus one = two **OR** 2 × 1 = 2

two plus two = four **OR** 2 × 2 = 4

three plus three = six **OR** 2 × 3 = 6

four plus four = eight **OR** 2 × 4 = 8

five plus five = ten **OR** 2 × 5 = 10

six plus six = twelve **OR** 2 × 6 = 12

seven plus seven = fourteen **OR** 2 × 7 = 14

eight plus eight = sixteen **OR** 2 × 8 = 16

nine plus nine = eighteen **OR** 2 × 9 = 18

ten plus ten = twenty **OR** 2 × 10 = 20

**Numbers from 11 to 20:**

eleven plus eleven = twenty two **OR** 2 × 11 = 22

twelve plus twelve = twenty four **OR** 2 × 12 = 24

thirteen plus thirteen = twenty six **OR** 2 × 13 = 26

fourteen plus fourteen = twenty eight **OR** 2 × 14 = 28

fifteen plus fifteen = thirty **OR** 2 × 15 = 30

sixteen plus sixteen = thirty two **OR** 2 × 16 = 32

seventeen plus seventeen = thirty four **OR** 2 × 17 = 34

eighteen plus eighteen = thirty six **OR** 2 × 18 = 36

nineteen plus nineteen = thirty eight **OR** 2 × 19 = 38

twenty plus twenty = forty **OR** 2 × 20 = 40

**Numbers from 21 to 25:**

twenty one plus twenty one = forty two **OR** 2 × 21 = 42

twenty two plus twenty two = forty four **OR** 2 × 22 = 44

twenty three plus twenty three = forty six **OR** 2 × 23 = 46

twenty four plus twenty four = forty eight **OR** 2 × 24 = 48

twenty five plus twenty five = fifty **OR** 2 × 25 = 50

Children can memorize the numbers adding doubles up to 25 so that they can increase the skills in adding the numbers orally and can score good marks in mental math.

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