Introduction
A free notation & substitution worksheet for GCSE and iGCSE Maths, covering the Algebra content at both Foundation and Higher tier. It works through writing expressions using correct algebraic notation, substituting positive and negative values into expressions and formulae, and using the order of operations correctly when doing so. Each worksheet opens with worked examples and matching Your turn questions, then moves through fluency, reasoning, problem solving and exam-style practice, so you build the technique first and then apply it to the kind of unfamiliar, multi-step questions that separate grades in the exam. Written to match the style and presentation of Edexcel iGCSE 4MA1 and the other major GCSE boards. Full step-by-step solutions are provided in a separate PDF, so you can check your method as well as your answer.
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