4024/11 Oct/Nov 2020, Question 8: Estimation
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Estimate the value of (6013 × 0.0405) ÷ √8.986 by rounding each number to 1 significant figure.
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Solution · 2 marks
- 16013 ≈ 6000, 0.0405 ≈ 0.04, 8.986 ≈ 9
- 2(6000 × 0.04)/√9 = 240/3
- 3= 80
Answer80
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