Keystones — Cornerstone
Five GCSE retrieval questions · 7 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 80 + 84
Answer: 80 + 84 = 164 -
2. Algebra
Solve: x + 4 = 15
Answer: x = 11 -
3. Geometry
Opposite = 6cm, hypotenuse = 12cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 12:15
Answer: 4:5 -
5. Statistics
Calculate the mean of: 14, 30, 31, 32, 7, 43, 32
Answer: 27