Divisibility criteria of 5:

If the last digit of a number is zero or five, the number is divisible by five.

Example 1.

Is 15 divisible by 5?

The number 15 ends in a 5.

15 is divisible by 5 for its latest digit is 5

15 ÷ 5 = 3

Example 2.

Is 150 divisible by 5?

The number 150 ends in a 0.

150 is divisible by 5 for the latter digit is 0:

150 ÷ 5 = 30

Example 3.

Is 14 divisible by 5?

The number 14 ends in a 4.

14 is not divisible by 5 for its last digit is not zero or five:

14 ÷ 5 = 2 R 4

Example 4.

Is -35 divisible by 5?

The number -35 ends in 5.

-35 is divisible by 5 for its last digit is 5:

-35 ÷ 5 = -7