The following table states rules for quickly testing if numbers are divisible by certain values.

If it's
divisible
by ...
Divisibility Rule
Example
2
The number ends with an even number: 0, 2, 4, 6 or 8
238
3
The sum of the digits is divisible by 3
741
(7 + 4 + 1 = 12)
4
The last 2 digits of the number are divisible by 4
852
(52/4 = 13)
5
The number ends in 0 or 5
1265
6
The number is divisible by 2 and 3
354
8
The last 3 digits are divisible by 8

6216
(216/8 = 27)

9
The sum of the digits is divisible by 9
6255
(6 + 2 + 5 + 5) / 9 = 2
10
The number ends with a 0
260
11
[The sum of the digits in the odd power of 10 place values] minus [the sum of the even power of 10 place values] is divisible by 11
48136
[(6 + 1 + 4) -
(3 + 8)]/11=0


divider

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