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What substitution means

What substitution means

Flowchart showing substitution steps: replace variables with values, put negative values in brackets, work out brackets and powers, then multiplication and division, then addition and subtraction, with examples of hidden multiplication.

A variable is a letter that stands for a number. Substitution means replacing the letter with its given value, then working out the result.

Substitution Lesson

  1. IGCSE
  2. /Maths
  3. /Substitution

Step-by-step lessons covering Oxford AQA IGCSE Maths Substitution 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