# GCSE Maths

## Distance and length

We will begin by trying to understand the way in which length and distance are calculated and in what units. ...

## Interest

Interest is given on investments that you make and is calculated as a percentage of the initial investment. For example, ...

## Percentages

Percentages are used in much the same way as decimals and fractions in that they show a link between two ...

## Proportionality

Proportions Proportions are used in mathematics to show a relationship between two things. This is very similar to a ratio and ...

What is a ratio? A ratio is used when we are comparing two different amounts. For example, if we were ...

## Order of mathematical processes

When we are given a question such as 4×54×5, we would get the same answer even if we swapped the ...

## Positive and negative numbers

From everyday life you should already understand positive and negative numbers, however, you may not understand the way in which ...

## The number line

Very often people like to use a number line to give a visual idea of where numbers come in a ...