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What bounds mean

What bounds mean

Number line showing that 28 cm to the nearest cm represents values from 27.5 inclusive to 28.5 exclusive.

When a measurement has been rounded, the true value is not exactly the number written. Bounds tell us the smallest and largest values the measurement could be.

Bounds Lesson

  1. GCSE
  2. /Maths
  3. /Bounds

Step-by-step lessons covering AQA GCSE Maths Bounds 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

SurdsBoundsDirect and Inverse ProportionQuadratic FormulaFactorising Harder QuadraticsAlgebraic FractionsRearranging Harder FormulaeInverse and Composite FunctionsIterationFinding the Area of Any TriangleThe Sine RuleThe Cosine RuleCongruent Triangles3d Pythagoras and TrigonometryHistogramsConditional Probability