4024/12 May/Jun 2025, Question 9: Estimation
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Estimate the rectangle's area by rounding each given side length, 87.1 mm and 23.6 mm, to 1 significant figure before multiplying.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 187.1 ≈ 90 and 23.6 ≈ 20
- 290 × 20 = 1800 mm²
Answer1800
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