Wednesday, December 14, 2011

Divisibility Rules

1-All whole numbers are divisible by 1

2-All even numbers are divisible by 2 (Numbers that end in 0,2,4,6, and 8)

3-Find the sum of the whole number, and see it is divisible by 3

4-If it is divisible by 2 twice then it is divisible by 4

5-All whole numbers that end in 5 or 0 are divisible by 5

6-If the number is divisible by 2 and 3 then it is divisible by 6

7-Use a calculator

8-If it is divisible by 2 thrice then it is divisible by 8

9-Get the sum of the whole number, and see if it is divisible by 9

10-All whole numbers that end in 0 are divisible by 10

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