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From words to algebra

From words to algebra

Flowchart showing the steps for writing an algebraic expression: identify the variable, spot key words, write each part, then combine carefully

A variable is a letter such as xxx or nnn that stands for an unknown or changing number. An expression combines numbers, variables, and operations, such as x+6x+6x+6 or 5m5m5m.

Writing an Expression Lesson

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

Step-by-step lessons covering Oxford AQA IGCSE Maths Writing an Expression for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Since content from any part of the specification can appear on either paper, keep number and algebra fluency sharp throughout the course rather than leaving it until near the exam.

Lessons

Calculation ProblemsUsing a CalculatorSystematic ListingFractions of an AmountFractions, Decimals and PercentagesWriting an ExpressionAnglesArea and PerimeterProbabilityAveragesPie Charts