Algrebra | Division

1

Every integer is divisible by 1.

2

A number is divisible by 2 if its last digit is even (0, 2, 4, 6, 8).

3

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

4

A number is divisible by 4 if the last two digits form a number that is divisible by 4.

5

A number is divisible by 5 if its last digit is 0 or 5.

6

A number is divisible by 6 if it is divisible by both 2 and 3.

7

To check divisibility by 7, double the last digit, subtract it from the rest of the number, and see if the result is divisible by 7.

8

A number is divisible by 8 if the last three digits form a number that is divisible by 8.

9

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

10

A number is divisible by 10 if it ends in 0.