4024/12 May/Jun 2020, Question 5: Estimation
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Round 2.78, 61.4 and 0.893 each to one significant figure, then use these to estimate the value of 2.78³ divided by (61.4 × 0.893).
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 12.78 ≈ 3, 61.4 ≈ 60, 0.893 ≈ 0.9
- 23³/(60 × 0.9) = 27/54
- 3= 1/2 = 0.5
Answer1/2 or 0.5
Stuck on a step? Read the free lesson: Estimation
Practise more estimation questions
Real 4024 past-paper questions, marked on your working like the exam, with a worked solution for every part.
Practise free on LemmaraMore past-paper questions on estimation
Also searched as: 4024/12/M/J/20 · 4024_s20_qp_12 · 4024 s20 12 · question 5.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.