Divisibility Rules

Question 1

Rule of Divisibility by 2

Answer 1

If the last digit is an even number (even 0), then the number is divisible by 2.

Question 2

Rule of Divisibility by 4

Answer 2

If the last two digits is divisible by 4, then the number is divisible by 4.

Question 3

Rule of Divisibility by 3

Answer 3

Add up all the digits. If the sum is divisible by 3, then the number is divisible by 3.

Question 4

Rule of Divisibility by 11

Answer 4

(sum of digits in odd places) - (sum of digits in even places) is divisible by 11.

Question 5

Rule of Divisibility by 6

Answer 5

If the number is divisible by both 3 and 2, then the number is divisible by 6.

Question 6

Rule of Divisibility by 10

Answer 6

A number is divisible by 10 if it ends in zero.

Question 7

Rule of Divisibility by 5

Answer 7

A number is divisible by 5 if it ends in zero or 5.

Question 8

Rule of Divisibility by 9

Answer 8

If the sum of the digits is divisible by 9, then the number is divisible by 9.