0580/13 May/Jun 2025, Question 13: Estimation
Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Non-calculator · 2 marks
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The question, in short
Round 62.5, 9.7 and 0.52 each to 1 significant figure, then use these to estimate the value of 62.5 ÷ (9.7 × 0.52).
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 162.5 ≈ 60, 9.7 ≈ 10, 0.52 ≈ 0.5
- 260/(10 × 0.5) = 60/5 = 12
Answer12
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