**Divisibility Rule for 15**

If you divide a number by 15 and you get a whole number as an answer (quotient), then that number is divisible by 15.

Instead of simply dividing your number by 15 to see if you get a whole number, you can use what we call the Divisibility Rule for 15.

The Divisibility Rule for 15 is used to determine if a number is divisible by 15. You can also call it the test of divisibility for 15.

For a number to be divisible by 15, the number must end with 0 or 5 AND the sum of its digits must be divisible by 3.

For example, 8,469,225 is divisible by 15 because the last digit is a 5 and 8 + 4 + 6 + 9 + 2 + 2 + 5 = 36 and 36 is divisible by 3.

However, 8,469,325 is not divisible by 15 even if it ends with 5 because 8 + 4 + 6 + 9 + 3 + 2 + 5 = 37 and 37 is not divisible by 3.

Remember, both conditions must be met for the number to be divisible by 15.

**Divisibility Rule for 16**

Here is the next Divisibility Rule on our list.

**Divisibility Rules**

Here is a list of all our Divisibility Rules.