Keystones — Bedrock
Five GCSE retrieval questions · 22 March 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 71 - 52
Answer: 71 - 52 = 19 -
2. Algebra
Simplify: 8x + 7x
Answer: 15x -
3. Geometry
Opposite = 5cm, hypotenuse = 10cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 30:25
Answer: 6:5 -
5. Statistics
Find the mean of: 9, 12, 5, 12, 19
Answer: 11.4