Keystones — Bedrock
Five GCSE retrieval questions · 4 January 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 2.8 + 9.1
Answer: 2.8 + 9.1 = 11.9 -
2. Algebra
Factorise: 8x + 12
Answer: 2(4x + 6) -
3. Geometry
Find the area of a circle with radius 3cm
Answer: 28.27cm² -
4. Ratio
In ratio 2:1, the difference between shares is 26. What are the shares?
Answer: 52 and 26 -
5. Statistics
What is the probability of getting heads when flipping a fair coin?
Answer: 1⁄2