Keystones — Bedrock
Five GCSE retrieval questions · 8 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 44 + 42
Answer: 44 + 42 = 86 -
2. Algebra
Factorise: 15x + 18
Answer: 3(5x + 6) -
3. Geometry
Opposite = 11cm, hypotenuse = 22cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 6:18
Answer: 1:3 -
5. Statistics
Find the mean of: 6, 8, 13, 18, 19
Answer: 12.8