Keystones — Cornerstone
Five GCSE retrieval questions · 19 February 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 13 + (24)
Answer: 37 -
2. Algebra
Simplify: 7x + 6x
Answer: 13x -
3. Geometry
Find the distance between (4, 4) and (10, 11)
Answer: 9.22 -
4. Ratio
Find 84% of 215
Answer: 180.6 -
5. Statistics
Calculate the mean of: 36, 24, 22, 33, 40, 14, 13, 11
Answer: 24.1