Keystones — Cornerstone
Five GCSE retrieval questions · 12 May 2026 · mathsvault.uk/keystones
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1. Number
Find the total of 135, 193, and 145
Answer: 473 -
2. Algebra
Solve: 9x = 63
Answer: x = 7 -
3. Geometry
Calculate the area of a circle with diameter 11cm
Answer: 95.03cm² -
4. Ratio
Simplify the ratio 15:6
Answer: 5:2 -
5. Statistics
Calculate the mean of: 9, 41, 6, 34, 21, 32
Answer: 23.8