Divisibility Rules

What's The Rule?

What Are Divisibility Rules?.....

A Divisible Number is a Number that is Divisible by a number Given. These numbers therefor cannot have a remainder. Start with the number one, every whole number can be divided into even groups. Obviously any number, can be put into a one person group by itself. Some Numbers cannot be split into two groups, for example the number 35 is not able to be split into two groups it will turn into a number with a remainder. A remainder Proves that the number given is not divisible by two.


The Divisibility Rules

Dividing By 2


  1. All even numbers are divisible by 2. E.g., all numbers ending in 0,2,4,6 or 8.

Dividing By 3


  1. Add up all the digits in the number.
  2. Find out what the sum is. If the sum is divisible by 3, so is the number.






Dividing By 4


  1. Are the last two digits in your number divisible by 4?
  2. If so, the number is too.


Dividing By 5


  1. Numbers ending in a 5 or a 0 are always divisible by 5.


Dividing By 6


  1. If the Number is divisible by 2 and 3 it is divisible by 6 also.


Dividing By 9


  1. Almost the same rule and dividing by 3. Add up all the digits in the number.
  2. Find out what the sum is. If the answer is divisible by 9, so is the number. Dividing By 10




  1. If the number ends in a 0, it is divisible by 10.