Keystones — Cornerstone
Five GCSE retrieval questions · 13 January 2026 · mathsvault.uk/keystones
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1. Number
Find the total of 271, 284, and 105
Answer: 660 -
2. Algebra
Solve: 8x - 11 = 4x + 13
Answer: x = 6 -
3. Geometry
Calculate the area of a circle with diameter 9cm
Answer: 63.62cm² -
4. Ratio
Find 59% of 289
Answer: 170.51 -
5. Statistics
Calculate the mean of: 29, 19, 31, 30, 37, 21, 18, 36
Answer: 27.6