Keystones — Cornerstone
Five GCSE retrieval questions · 14 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 65 + 63
Answer: 65 + 63 = 128 -
2. Algebra
Solve: x + 11 = 20
Answer: x = 9 -
3. Geometry
Find the area of a circle with radius 6cm
Answer: 113.cm² -
4. Ratio
Simplify: 6:9:12
Answer: 2:3:4 -
5. Statistics
Find the mean of: 9, 2, 20, 5, 6
Answer: 8.4