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16-09-2016
Mathematics

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explain how using basic facts can help you find 10 x 20 x 30 x 40 mentally

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OmegaAzzy OmegaAzzy

16-09-2016

10 x 20 x 30 x 40 = 24000
1 x 2 x 3 x 4 = 24
Count up the extra zeros, (20 30 40) and theres 3 extra zeros
Put them at the end of 24 to get the answer.

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