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27 July, 08:13

How can you tell if a number is divisible by 3

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  1. 27 July, 08:41
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    Add up the numbers and if the sum is divisible by 3 the original number is also divisible by 3.

    ex: 357:3

    3+5+7=15

    15:3=5

    so 357 is divisible by 3.
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