Recognise square and cube numbers | Year 5 Maths Resources

## What you need to know

Things to remember:

• Because you should know your times tables up to 12×12, you should know all the square numbers up to $12^2$
• You need to learn the cube numbers up to $5^3$

A square has side lengths of 5cm.

How do we find the area of a square? We multiply the sides together!

$$5\times5=25$$

$$Area = 25cm^2$$

And this is exactly how we make squares numbers; we multiply a number by itself! Because we should know our times tables up to 12×12, we should be able to learn our squared numbers up to 12×12.

$$1^2=1\times1=1$$

$$2^2=2\times2=4$$

$$3^2=3\times3=9$$

$$4^2=4\times4=16$$

$$5^2=5\times5=25$$

$$6^2=6\times6=36$$

$$7^2=7\times7=49$$

$$8^2=8\times8=64$$

$$9^2=9\times9=81$$

$$10^2=10\times10=100$$

$$11^2=11\times11=121$$

$$12^2=12\times12=144$$

Cubed numbers are only a little trickier, we just multiply a number by itself twice.

$$1^3=1\times1\times1=1$$

$$2^3=2\times2\times2=8$$

$$3^3=3\times3\times3=27$$

$$4^3=4\times4\times4=64$$

$$5^3=5\times5\times5=125$$

## Example Questions

$$7^2=7\times7=49$$

$$4^3=4\times4\times4=64$$