Simply Maths UK

Topics / Number / Number

OCR Foundation · Paper 1 · May 2025 · Q9 · calculator

Factors, HCF & Common Multiples

1 Try it first

From the paper · Q9 · 5 marks

(a) Factors of A: 1, 2, 3, 5, 6, 10, 15, 30
(i) Write down the value of A
(ii) HCF of A and B, B = 3 × 5 × 7
(b) 150 to 200, factors 7 and 8
OCR Foundation · Paper 1 · May 2025. Question © the exam board, shown for study.

Get a pencil and have a go on paper before you watch.

2 Watch it solved

Tried it? Press play. Plays from YouTube.

3 Your turn

Factors of N: 1, 2, 3, 4, 6, 8, 12, 24 (a) Write down N (b) M = 2 × 3 × 11: HCF of N and M (c) 100 to 150, factors 5 and 12

Show the answer

(a) N = 24 (b) M = 66, HCF = 6 (c) 120 (a multiple of 60).

More in Number