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What estimating means

What estimating means

Flowchart of estimating steps: round to 1 significant figure, rewrite the calculation, use BIDMAS, apply quick facts, and check whether a calculator answer is sensible An estimate is close to the exact answer, but not exact, and an approximation is the rounded or simplified value you use. In GCSE questions, you usually round each number to 1 significant figure unless another easy value is clearly better.

Estimating Lesson

  1. GCSE
  2. /Maths
  3. /Estimating

Step-by-step lessons on WJEC GCSE Maths Estimating. Each one builds up to exam-style questions. 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.