Keystones — Cornerstone
Five GCSE retrieval questions · 25 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 37 + 84
Answer: 37 + 84 = 121 -
2. Algebra
Solve: x + 13 = 25
Answer: x = 12 -
3. Geometry
Find the area of a circle with radius 7cm
Answer: 153.94cm² -
4. Ratio
Simplify: 8:6:12
Answer: 4:3:6 -
5. Statistics
Calculate the mean of: 50, 31, 30, 34, 47, 12
Answer: 34