Keystones — Bedrock
Five GCSE retrieval questions · 2 November 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 20 + 22
Answer: 20 + 22 = 42 -
2. Algebra Substitution
If x = 9, find the value of 2x + 11
Answer: 29 -
3. Geometry Converting lengths
Convert 26cm to mm
Answer: 260mm -
4. Ratio Simplifying ratios
Simplify the ratio 14:4
Answer: 7:2 -
5. Statistics Mean
Find the mean of: 19, 17, 9, 12, 15
Answer: 14.4