0580/43 May/Jun 2026, Question 3: Significant Figures
Cambridge IGCSE Mathematics 0580 · Paper 43 (Extended) · Calculator · 2 marks
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The question, in short
Evaluate (0.7 − 3.5³) ÷ 4.2² and give the result to 2 significant figures.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 13.5³ = 42.875, 4.2² = 17.64
- 2(0.7 − 42.875)/17.64 = −42.175/17.64
- 3= −2.3908…
- 4= −2.4 (2 s.f.)
Answer−2.4
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