How can you tell whether a number is divisible by another number (leaving no remainder) without actually doing the division.
Divisibility by:
2 | If the last digit is even. |
3 | If the sum of the digits is divisible by 3. |
4 | If the last two digits form a number divisible by 4. |
5 | If the last digit is a 5 or a 0. |
6 | If the number is divisible by both 3 and 2. |
8 | If the last three digits form a number divisible by 8.. |
9 | If the sum of the digits is divisible by 9, the number is also. |
10 | If the number ends in 0. |