Keystones — Cornerstone
Five GCSE retrieval questions · 31 May 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 517 + 191
Answer: 517 + 191 = 708 -
2. Algebra
Solve: 9x = 126
Answer: x = 14 -
3. Geometry
Find the area of a circle with radius 5cm
Answer: 78.54cm² -
4. Ratio
Simplify the ratio 9:24
Answer: 3:8 -
5. Statistics
Find the mean of: 20, 11, 15
Answer: 15.333333333333