Keystones — Cornerstone
Five GCSE retrieval questions · 10 August 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 50 + 43
Answer: 50 + 43 = 93 -
2. Algebra
Solve: 9x = 99
Answer: x = 11 -
3. Geometry
Opposite = 13cm, hypotenuse = 15cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Calculate 10% of 58
Answer: 5.8 -
5. Statistics
Find the mean of: 16, 12, 16
Answer: 14.666666666667