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Dec16

Divisibility Guidelines for 2, 5, and 10

In this post, we are going to learn and practice the divisibility guidelines for 2, 5, and 10.

Divisibility Guidelines for 2

In order to know if a number is divisible by 2, you have to check whether it is an even number.  If it is even, it is divisible by 2.  The even numbers are those which end in 0, 2, 4, 6, or 8.

Here are some examples:

• We notice the last digit, 9, is not an even number, so 769 is not divisible by 2.

• The last number is 6, which is even, so 316 is divisible by 2.

Divisibility Guidelines for 5

In order to know if a number is divisible by 5, the number has to end in 0 or 5.

Here are some examples:

• Is 5815 divisible by 5? 5815 ends in 5, so 5815 is divisible by 5.
• Is 5688 divisible by 5? The last digit is 8 (not 0 or 5), so it is not divisible by 5.

Divisibility Guidelines for 10

In order to know if a number is divisible by 10, it has to end in 0.

We are going to see some examples:

• Is 999 divisible by 10? The last digit is a 9 (not 0), so 999 is not divisible by 10.
• Is 370 divisible by 10? The last digit is a 0, so 370 is divisible by 10.

In this previous posts you can review divisibility guidelines for:

And if you want to learn much more elementary math, try Smartick for free!

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Diane Ackerman
Smartick is a fun way to learn math
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