Keystones — Bedrock
Five GCSE retrieval questions · 19 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 31 + 38
Answer: 31 + 38 = 69 -
2. Algebra
Factorise: 15x + 12
Answer: 3(5x + 4) -
3. Geometry
Opposite = 7cm, hypotenuse = 9.9cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 16:24
Answer: 2:3 -
5. Statistics
Find the mean of: 12, 19, 12, 20
Answer: 15.75