Divisibility Rules

Divisibility-when a number can be divided by another number, with no remainder or decimal; it is a whole number

1-all numbers
2-even numbers
3-sum of the digits is divisible  by 3
4-divisible by 2 twice
5-ends in a 0 or a 5
6-divisible by 2 and 3
7-nothing
8-divisible by 2 thrice
9-sum of the digits is 9
10-ends in 0