Prime Factors, HCF and LCM
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648=23×34 648 = 2^3 \times 3^4 648=23×34 540=22×33×5 540 = 2^2 \times 3^3 \times 5 540=22×33×5
a.

Write down the highest common factor (HCF) of 648 and 540.

[1]
b.

Find the lowest common multiple (LCM) of 648 and 540.

[2]

Prime Factors, HCF and LCM Questions

Practise Edexcel IGCSE Maths Prime Factors, HCF and LCM with exam-style questions for IGCSE Maths. 16 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Prime Factors, HCF and LCM Questions

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