Divisibility rules help students quickly determine whether one number can be divided evenly by another without doing long division.
A number is divisible by 2 if it ends in 0, 2, 4, 6, or 8, which means it is an even number.
A number is divisible by 3 if the sum of its digits is divisible by 3.
For divisibility by 4, only the last two digits matter—if those digits are divisible by 4, the whole number is as well.
A number is divisible by 5 if it ends in 0 or 5.
To be divisible by 6, a number must be divisible by both 2 and 3.
A number is divisible by 9 when the sum of its digits is divisible by 9. For divisibility by 10, the rule is simple: the number must end in 0.
Finally, a number is divisible by 8 if the last three digits are divisible by 8 or if the number ends in three zeros. Using these rules allows students to quickly check divisibility and build strong number sense skills.
Divisibilty Rules Worksheet 1-10
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