Keystones — Cornerstone
Five GCSE retrieval questions · 9 March 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 64 + 66
Answer: 64 + 66 = 130 -
2. Algebra
Solve: x + 13 = 21
Answer: x = 8 -
3. Geometry
Find the area of a circle with radius 4cm
Answer: 50.27cm² -
4. Ratio
Find 81% of 315
Answer: 255.15 -
5. Statistics
Calculate the mean of: 30, 47, 34, 30, 33, 5, 10, 5
Answer: 24.3