Keystones — Cornerstone
Five GCSE retrieval questions · 18 April 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 917 + 348
Answer: 917 + 348 = 1265 -
2. Algebra
Factorise: 3x² + 6x
Answer: 3x(x + 2) -
3. Geometry
Calculate the distance between (7, 3) and (10, 7)
Answer: 5 -
4. Ratio
Simplify the ratio 24:6
Answer: 4:1 -
5. Statistics
Calculate the mean of: 24, 43, 19, 22, 30, 18, 10
Answer: 23.7