PDAWGINTHEHOUSE5458 PDAWGINTHEHOUSE5458

29-03-2018
Mathematics

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What do you notice about the sum of the digits of each multiple of 3?

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jcherry99 jcherry99

29-03-2018

They should add up to something that is divisible by 3.
642 = 6 + 4 + 2 = 12
12/3 = 4
642 is divisible by 3
642/ 3 = 214

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