# Is 81 Divisible By 5?

In this quick and easy guide, we'll work out whether 81 is divisible by 5. There are some simple rules we can follow to decide whether one number is divisible by another without ever needing to even do the division!

First up, let's clarify what we mean by "81 is divisible by 5". What we want to check is whether 81 can be divided by 5 without any remainder (i.e the answer is a whole number).

Checking whether 81 is divisible by 5 is one of the easiest divisibility checks you can make. Basically, if the number ends with either a 5 or a 0, it is divisible by 5. In this case, it ends with 1.

We can see that 81 DOES NOT end with a 5 or a 0, which means that **81 IS NOT divisible by 5.**

Another way you can figure out if 81 is divisible by 5 is by actually doing the calculation and dividing 81 by 5:

As you can see, when we do this division we have a decimal of 0.2. Since the division does not result in a whole number, this shows us that 81 is not divisible by 5.

Hopefully now you know exactly how to work out whether one number is divisible by another. Could I have just told you to divide 81 by 5 and check if it is a whole number? Yes, but aren't you glad you learned the process?

Give this a go for yourself and try to calculate a couple of these without using our calculator. Grab a pencil and a piece of paper and pick a couple of numbers to try it with.

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