# Indices and calculators

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

First always try simple numbers you know first

What is 2^2 ?

And we know it is 2\times2=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 4xx4xx4 ……. Ten times)

Enter 4

Press x^y button

Enter 10

Press  =

Answer: should be 4^10 = 1,048,576