Divisibility Rule

Divisibility by 2 Rule  

Rule: Almost everyone is familiar with this rule which states that any even number can be divided by 2. Even numbers are multiples of 2. A number is even if ends in 0,2,4,6, or 8.

Divisibility by 3 Rule  

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

Divisibility by 4 Rule 

Rule: A number is divisible by 4 if the number's  last two digits are divisible by 4.

Divisibility by 5 Rule 

Rule: A number is divisible by 5 if the its last digit is a 0 or 5.

Divisibility by 8 Rule

Rule: A number passes the test for 8 if the last three digits form a number is divisible 8.

Divisibility by 9 Rule  

Rule: A number is divisible by 9 if the sum of the digits are evenly divisible 9.

Divisibility by 10 Rule  

Rule: A number passes the test for 10 if its final digit is 0.