Explaining mental methods

All the questions on these pagers can be done mentally: the important part is explaining the method that was used.

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When working out which of these number sentences are true remember that the part in brackets should be worked out first.

All these questions are about mentally multiplying by 100 and 1000, including decimals.

Using mental methods to multiply decimals by 10, 100 and 1000.

Multiplying large numbers by 100 and 1,000.

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