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Letters, expressions and formulas

Letters, expressions and formulas

Word clue chart showing more than to plus, less than to minus, twice to 2x, half to x over 2, each or per to multiplication, and total to adding parts

A variable is a letter that stands for a number we do not know yet or that can change. An expression is a mathematical phrase made from numbers, variables and operations, so it does not have an equals sign.

Writing an Expression Lesson

  1. GCSE
  2. /Maths
  3. /Writing an Expression

Step-by-step lessons covering Edexcel GCSE Maths Writing an Expression for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build fluency with number, ratio and algebra first, since geometry, probability and statistics topics rely on them, and leave extra time nearer the exam for Higher-tier problem-solving and multi-step reasoning questions.

Lessons

Calculation ProblemsUsing a CalculatorSystematic ListingFractions of an AmountFractions, Decimals and PercentagesSimplifying AlgebraWriting an ExpressionFunction MachinesSolving One Step EquationsAnglesArea and PerimeterProbabilityFrequency PolygonsAveragesBar ChartsStem and LeafPie Charts