O-LevelMathematicsNumber4024/12 · May/June 2020 · Q134 Marks
Write 108 as the product of its prime factors.
- (a)Write 108 as the product of its prime factors.[2]
- (b)Find the lowest common multiple (LCM) of 108 and 180.[2]
Mark scheme
Marking points from the official mark scheme (May/June 2020). The mark or mark type is shown in brackets.
- [2] 2 × 2 × 3 × 3 × 3 or 2² × 3³
- B1 for 2, 2, 3, 3, 3 as factors or M1 for any two stages correct in factor tree or ladder method
- [2] 540
- B1 for 2² × 3³ × 5 oe or M1 for 2, 2, 3, 3, 5 identified as prime factors of 180 or for at least three multiples of 180 and 108 listed
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