Foundation June 2018 Paper 1 Q10
10
(a) Find the Lowest Common Multiple (LCM) of 12 and 20 (2)
(b) Find the Highest Common Factor (HCF) of 24 and 56 (2)
| Scheme | Marks |
|---|---|
| 12, 24, 36… and 20, 40, 60, … or 2, 2, 3 and 2, 2, 5 (may be on a factor tree oe) | M1 |
| 60 | A1 |
| (2) |
Notes
M1: accept prime factors seen in factor tree or correct position in Venn diagram
A1: for 60 or 2 × 2 × 3 × 5 oe
| Scheme | Marks |
|---|---|
| at least 3 of 2, 3, 4, 6, 8, 12 and at least 3 of 2, 4, 7, 8, 14, 28 or 2, 2, 2, 3 and 2, 2, 2, 7 (may be on a factor tree oe) | M1 |
| 8 | A1 |
| (2) | |
| (4 marks) |
Notes
M1: accept prime factors seen in factor tree or correct position in Venn diagram
A1: for 8 or 2 × 2 × 2 oe