4024/11 Oct/Nov 2021, Question 11: 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 58.24 divided by (32.5 × 0.126) by rounding each number to 1 significant figure.
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Solution · 2 marks
- 158.24 ≈ 60, 32.5 ≈ 30, 0.126 ≈ 0.1
- 260/(30 × 0.1) = 60/3
- 3= 20
Answer20
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