Keystones — Cornerstone
Five GCSE retrieval questions · 27 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 33 + 95
Answer: 33 + 95 = 128 -
2. Algebra
Find the next term: 25, 27, 29, 31, ...
Answer: 33 -
3. Geometry
Find the area of a circle with radius 10cm
Answer: 314.16cm² -
4. Ratio
Calculate 25% of 89
Answer: 22.25 -
5. Statistics
What is the probability of getting heads when flipping a fair coin?
Answer: 1⁄2