More doubling and halving

Using tables knowledge and doubling to multiply by 12, 24, 18 etc.

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Tips and hints on how to use mental methods to double and halve larger numbers, including 3-digit numbers.

How about trying to multiply by 14 or 16 in your head?

Multiplying by 101 or 99 in your head. Sounds difficult, but you can do it by multiplying by 100 and then adjusting.

Multiply mentally using knowledge of times tables and square numbers.

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