# Maths Formula Sheet

A Formula sheet on maths...

hope its useful.

- Created by: Rezwana
- Created on: 13-03-11 14:41

First 159 words of the document:

GCSE Maths Formula Sheet

Rules of Indices

Rule 1: When you multiply indices of the same number you add the powers.

For example: 54x 53= 54+3= 57

Rule 2: When you divide indices of the same number you subtract the powers.

For example:

Rule 3: Indices outside a bracket multiply.

For example: (32)4 = 32 x 4 = 38

Rule 4: Negative indices mean reciprocal, i.e. 'one over....' or 'put on the

bottom of a fraction'.

For example:

Rule 5: When the power is a fraction the top of the fraction (numerator) is a

power and the bottom of the fraction is a root.

For example:

Rule 6: Anything to a power of 1 is just itself and we normally don't bother

putting the 1 there.

For example: 51 is just 5.

Anything to a power of 0 is equal to 1, it doesn't matter what number it is!

For example: 100 = 1, 20 = 1, x0 = 1, etc.

The nth Term

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