4024/12 May/Jun 2024, Question 11: Estimation
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Estimate the value of (5.32 + 3.97) ÷ √878 by rounding each number to 1 significant figure.
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Solution · 2 marks
- 15.32 ≈ 5, 3.97 ≈ 4, 878 ≈ 900
- 2(5 + 4)/√900 = 9/30
- 3= 0.3
Answer0.3 or 3/10
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