Square and Cube Numbers

If you multiply a whole number by itself then you get a square number. There are a few different ways that square numbers can be written.

For example 5 squared or 5 \times 5 =25, so 25 is a square number.

Some handy notation that you might see uses indices to write square numbers e.g. 5 \times 5 = 5^{2} , as shown this is still equal to 25.

Cube numbers are similar to square numbers except a whole number is multiplied by itself twice.

For example 3 cubed would be 3 \times 3 \times 3 = 27 so 27 is a cube number. Similar notation can be used to express cube numbers e.g. 3 \times 3 \times 3 = 3^{3}