0580/12 Feb/Mar 2023, Question 18: Upper and Lower Bounds
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 2 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
A bag of sand has mass m kg, given as 12 kg to the nearest kilogram. Complete the inequality giving the range of possible values for m.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 1Nearest kilogram: half of 1 kg is 0.5 kg
- 212 − 0.5 = 11.5 and 12 + 0.5 = 12.5
- 311.5 ≤ m < 12.5
Answer11.5, 12.5
Stuck on a step? Read the free lesson: Upper and Lower Bounds
Practise more upper and lower bounds questions
Real 0580 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 upper and lower bounds
Also searched as: 0580/12/F/M/23 · 0580_m23_qp_12 · 0580 m23 12 · question 18.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.