0580/11 May/Jun 2023, Question 14: Estimation
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 2 marks
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The question, in short
Round 6.7, 2.1, 18 and 5.9 each to 1 significant figure, then use these to estimate the value of (6.7 × 2.1)/(18 − 5.9), showing all working.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 16.7 ≈ 7, 2.1 ≈ 2, 18 ≈ 20, 5.9 ≈ 6
- 2(7 × 2)/(20 − 6) = 14/14
- 3= 1
Answer1
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