4MA1/1H Jan 2020, Question 2: HCF and LCM
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1H (Higher) · Calculator · 2 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Find the lowest common multiple of 28 and 105.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 128 = 2 × 2 × 7
- 2105 = 3 × 5 × 7
- 3LCM = 2 × 2 × 3 × 5 × 7
- 44 × 3 = 12
- 512 × 5 = 60
- 660 × 7 = 420
Answer420
Stuck on a step? Read the free lesson: HCF and LCM
Practise more hcf and lcm questions
Real 4MA1 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 hcf and lcm
Also searched as: 4MA1 1H January 2020 · 4MA1/1H · 4ma1 jan20 1h · question 2.
Lemmara is an independent study tool, not affiliated with or endorsed by Pearson Edexcel. The worked solutions are Lemmara’s own.