4MA1/1FR Jan 2023, Question 6: HCF and LCM
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1FR (Foundation) · Calculator · 3 marks
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The question, in short
List every factor of 10, then find the lowest common multiple of 18 and 60.
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Part (a) · 1 mark
Write down all the factors of 10.
- 1List all numbers that divide 10 exactly: 1, 2, 5, 10
Answer1, 2, 5, 10
Part (b) · 2 marks
Find the lowest common multiple of 18 and 60.
- 1Find prime factors: 18 = 2 × 3 × 3
- 260 = 2 × 2 × 3 × 5
- 3Take the highest power of each prime: 2², 3², 5
- 4Multiply: 4 × 9 × 5 = 180
Answer180
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