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Prime factors, lowest common multiple and highest common factor can help us to solve real world problems. This is a useful area of mathematics that will aid your understanding of number.

Indices are a way of representing numbers and letters that have been multiplied by themselves a number of times. They help us to complete problems involving powers more easily.

Venn diagrams are a useful tool in the world of statistics. Once you have got to grips with these, you will be able to arrange all sorts of groups and sets.

Performing calculations with very big or small numbers can be difficult. Such calculations, for example those related to space, can be made easier by converting numbers in and out of standard form.

Ratios show the relationship between two values. They may be in direct proportion and increase as the other increases, or they can be in inverse proportion; as one increases the other decreases.

Approximation includes estimation, rounding to powers of 10, decimal places and significant figures.

Understanding mathematical terms is an important step towards a stronger grasp of the subject. Learn the meaning and application of square, cube, square root, cube root and reciprocal.