Low powers of the first few numbers

It can be really helpful to memorise the first few powers, not to replace the use of your calculator for numerical questions, but because they occur in a lot of algebra questions. If you recognise that a number is a square, for example, then it can help you decide how to deal with an expression.

n	2n	3n	5n
1	2	3	5
2	4	9	25
3	8	27	125
4	16	81	625
5	32	243	3125
6	64	729
7	128
8	256
9	512
10	1024

Of course, if you know the powers of 2 then you also know powers of 4 and 8. For example, 8³ = (2³)³=2⁹=512

You are also advised by some boards to know the squares of the first 15 integers. You should know the first 10 already.

11	12	13	14	15
121	144	169	196	225