Keystones — Bedrock
Five GCSE retrieval questions · 23 November 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 47 + 41
Answer: 47 + 41 = 88 -
2. Algebra Substitution
If x = 2, find the value of 5x + 11
Answer: 21 -
3. Geometry Converting lengths
Convert 26cm to mm
Answer: 260mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:8
Answer: 3:2 -
5. Statistics Mean
Find the mean of: 10, 17, 11, 8, 16
Answer: 12.4