1MA0 Higher June 2013 Paper 1 Q5
5 Write 525 as a product of its prime factors. (3)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| 5 | 525 5 | 105 3 | 21 7 | \(3 \times 5 \times 5 \times 7\) | 3 | M1 for continual prime factorisation (at least first 2 steps correct) or first two stages of a factor tree correct M1 for fully correct factor tree or list 3, 5, 5, 7 A1 \(3 \times 5 \times 5 \times 7\) or \(3 \times 5^2 \times 7\) |