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Calculator rules that prevent easy errors

Calculator rules that prevent easy errors

A calculator is fast, but it only follows what you type. Most mistakes come from missing brackets, typing a fraction badly, or rounding before the end.

Using a Calculator Lesson

  1. IGCSE
  2. /Maths
  3. /Using a Calculator

Step-by-step lessons covering CIE IGCSE Maths Using a Calculator for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.

Lessons

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