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x Multiply

4 x 10 =

÷ Divide

90 ÷ 10 =

+ Addition

88 + 10 =

- Subtraction

80 - 10 =

**Multiply x * . () by ten:**

10 groups of or 10 lots of

Answer ends in 0

Add a zero to the right of the number

Skip count in 10s

Learn your 10 times tables

**Divide ÷ / by ten:**

How many times does 10 go into

Break into 10 groups

One tenth

Take a zero from the number if it ends in 0

Reverse 10x tables 3x10=30 so 30÷10=3 and 30÷3=10

**Add + ten:**

Add one to the tens digit

**Take - ten:**

Take one from the tens digit

Know your bonded pairs 8+2=10 so 10-2=8 and 10-8=2

Number in grey (left) x number in grey (top) = number in white __OR__ number in white ÷ number in grey = __other__ number in grey.

x | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|

10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 |

Number in grey (left) + number in grey (top) = number in white __OR__ number in white - number in grey = __other__ number in grey.

+ | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|

10 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |

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