# Is 20 Divisible By 4?

In this quick and easy guide, we'll work out whether 20 is divisible by 4. 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 "20 is divisible by 4". What we want to check is whether 20 can be divided by 4 without any remainder (i.e the answer is a whole number).

You can quickly check whether 20 is divisible by 4 by looking at the last two digits of 20. In this case the last 2 digits are 20.

We can see that 20 IS divisible by 4, which means that 20 is also divisible by 4.

Another way you can figure out if 20 is divisible by 4 is by actually doing the calculation and dividing 20 by 4:

20 / 4 =   5

Since the answer to our division is a whole number, we know that 20 is divisible by 4.

Hopefully now you know exactly how to work out whether one number is divisible by another. Could I have just told you to divide 20 by 4 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.