Let me be a bit more specific on MM97's list there
Sets, Number Systems (Integers, Natural Numbers, Real Numbers, Irrational Numbers, Rational Numbers, Surds), Income Tax & USC, Currency Exchange, Functions, Simultaneous Equations, Factorising, Algebraic Fractions, Algebraic Division, Multiplying Brackets, Quadratic Formula (which you know when to use if the question says solve this equation to two decimal places), Patterns and Sequences, Compound Interest.

123HOLOPER456— 09/06/16