Multiply by 5 by multiplying by 10 and halving

Multiply by 5 by multiplying by 10 and halving.

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These questions can all be done ?in your head? but they also ask for explanations of how they were done.

Revision of multiplying by 10, 100 and 1 000. Remember, it?s move one place to the left to multiply by 10.

More practice with multiplying by 10 or 100.

How many different multiplications can be made from three digits?

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