Keystones — Bedrock
Five GCSE retrieval questions · 14 November 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 37 + 18
Answer: 37 + 18 = 55 -
2. Algebra Substitution
If x = 10, find the value of 5x + 10
Answer: 60 -
3. Geometry Converting lengths
Convert 20cm to mm
Answer: 200mm -
4. Ratio Simplifying ratios
Simplify the ratio 8:12
Answer: 2:3 -
5. Statistics Mean
Find the mean of: 14, 8, 11, 17
Answer: 12.5