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What is the diviblity rule for8and7?

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Anonymous

13y ago
Updated: 8/19/2019

Dividing by 7

  • Take the last digit in a number.
  • Double and subtract the last digit in your number from the rest of the digits.
  • Repeat the process for larger numbers.
  • Example: 357 (Double the 7 to get 14. Subtract 14 from 35 to get 21 which is divisible by 7 and we can now say that 357 is divisible by 7.

Dividing by 8

  1. This one's not as easy, if the last 3 digits are divisible by 8, so is the entire number.
  2. Example: 6008 - The last 3 digits are divisible by 8, therefore, so is 6008.
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Wiki User

13y ago

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