- A number is divisible by
**2**if the last digit is 0, 2, 4, 6, 8.

- A number is divisible by
**3**if the sum of the digits is divisible by 3.

- A number is divisible by
**4**if the last two digits make a number that is divisible by 4.

- A number is divisible by
**5**if the last digit is 0 or 5.

- A number is divisible by
**6**if the number is divisible by 2 and 3.

- Divisibility test for
**7**: Double the last number of the number. Then subtract that number from the remaining number ( the number without the one you just doubled). If that number is divisible by 7, then so is the original number you were testing. Ex. 357 Double the 7 and get 14. Subtract 14 from 35 and you get 21. 21 is divisible by 7 therefore so is 357.

- A number is divisible by
**8**if the last three numbers make a number that is divisible by 8.

- A number is divisible by
**9**if the sum of the digits is divisible by 9.

- A number is divisible by
**10**if the last number is 0.