Keystones — Cornerstone
Five GCSE retrieval questions · 24 June 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 31 + 50
Answer: 31 + 50 = 81 -
2. Algebra
Solve: 6x = 84
Answer: x = 14 -
3. Geometry
Calculate the area of a right triangle with perpendicular sides 9cm and 9cm
Answer: 40.5cm² -
4. Ratio
Simplify: 10:8:6
Answer: 5:4:3 -
5. Statistics
Find the mean of: 11, 7, 14, 14
Answer: 11.5