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Divisibility rules
Term | Definition |
---|---|
2 | The last digit is even |
3 | If you add up all the digits and the answer is divisible by three, then the whole number is divisible by three |
4 | The last two digits are divisible by four |
5 | The number ends in five or zero |
6 | The number is divisible by three and two |
7 | If you double the last digit and minus it from the rest of the digits and the answer is seven or zero, then the whole number is divisible by seven |
8 | The last three digits are divisible by three |
9 | If you add up all the digits and the answer is divisible by nine, then the whole number is divisible by nine |
10 | The number ends in zero |
11 | If you add up every first number and every second number and minus it from each other and the answer is zero or eleven, then the number is divisible by eleven |
12 | The number is divisible by three and four |