Maths

Estimating Answers

Estimate the answer to an addition or subtraction by rounding before calculating.

MathsAge 9+25 minutes

What this topic covers

  • Round each number to the nearest 10 or 100 to make an estimate.
  • Use an estimate to judge whether an answer is sensible.
  • Choose the degree of rounding that gives a useful estimate.

Core concept summaries

Key ConceptsRound, Then AddIs the Answer Sensible?Estimate Means Round First

Practice formats pupils may meet

NeurofiED uses varied practice to help pupils apply the idea actively, check understanding and build confidence over time.

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