Keystones — Cornerstone
Five GCSE retrieval questions · 1 May 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 95 + 57
Answer: 95 + 57 = 152 -
2. Algebra
Factorise: 42x + 18
Answer: 6(7x + 3) -
3. Geometry
Opposite = 18cm, adjacent = 20cm. Calculate the angle
Answer: 42° -
4. Ratio
Simplify the ratio 40:25
Answer: 8:5 -
5. Statistics
Find the mean of: 20, 11, 20, 3, 13
Answer: 13.4