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# Numbers and Arithmetic (Metric)

Learn, or revise, prime factorisation, laws of indices, surds and inequalities.

## Units

### Numbers and Arithmetic

Surds, prime factorisation and the three laws of indices. Covered in the main at GCSE.

Simplification of surds such as $$\sqrt{50}$$.

Resolving an integer into its prime factors, e.g. $$308 = 2^2\times 7\times 11$$.

Using the three laws of indices.

### Relations

Solving inequalities. An A-level topic.

Solving simple inequalities in one variable.