Keystones — Bedrock
Five GCSE retrieval questions · 16 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 86 + 39
Answer: 86 + 39 = 125 -
2. Algebra
Solve: x + 10 = 14
Answer: x = 4 -
3. Geometry
Opposite = 7cm, hypotenuse = 9.9cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 18:15
Answer: 6:5 -
5. Statistics
Find the mean of: 5, 17, 15, 12
Answer: 12.25