Mathfinity · 2.2 HCF and LCM

2.2 · HCF and LCM

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HCF is the greatest number that divides both numbers exactly. LCM is the smallest positive number that both numbers divide into.

HCF(12, 18) = 6

Factors of 12: 1, 2, 3, 4, 6, 12. Factors of 18: 1, 2, 3, 6, 9, 18. The highest common factor is 6.

LCM(4, 6) = 12

Multiples of 4: 4, 8, 12, … Multiples of 6: 6, 12, … The first common multiple is 12.

✏️ Exercise · No points

Question 1

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