Numerical Fluency and Proportion · Number & Operations

Surds and Exact Calculations

Operating with irrational numbers and rationalising denominators to maintain mathematical precision.

Key Questions

  1. 1Why is it often better to leave an answer as a surd rather than a decimal?
  2. 2How does the distributive law apply to the multiplication of irrational numbers?
  3. 3What is the purpose of rationalising a denominator in an expression?

National Curriculum Attainment Targets

GCSE: Mathematics - Number
Year: Year 11
Subject: Mathematics
Unit: Numerical Fluency and Proportion
Period: Number & Operations

Suggested Methodologies

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