Keystones — Cornerstone
Five GCSE retrieval questions · 12 February 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 26 + 72
Answer: 26 + 72 = 98 -
2. Algebra
Solve: x + 11 = 27
Answer: x = 16 -
3. Geometry
Calculate the area of a circle with diameter 17cm
Answer: 226.98cm² -
4. Ratio
Calculate 50% of 80
Answer: 40 -
5. Statistics
Find the mean of: 3, 5, 6
Answer: 4.6666666666667