# Powers and calculators

How to work out powers (Indices/exponents) on a calculator.

First work out an easy power you know

What is `2^2`?

And we know it is `2xx2=4`

## Now on a calculator

Always try this easy one first so that you know you are pressing the correct buttons.

Enter 2

Press X^{y} button

Enter 2

Press =

Answer should be 4.

Now you can go onto more difficult powers.

**Example 1**

Put in `4^10` on a calculator

(Remember this is `4times4times4........` Ten times)

Enter 4

Press X^{y} button

Enter 10

Press =

Answer should be `4^10=1,048,576`