Keystones — Bedrock
Five GCSE retrieval questions · 8 October 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 27 + 20
Answer: 27 + 20 = 47 -
2. Algebra Substitution
If x = 6, find the value of 2x + 9
Answer: 21 -
3. Geometry Converting lengths
Convert 40cm to mm
Answer: 400mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:21
Answer: 8:7 -
5. Statistics Mean
Find the mean of: 6, 11, 16
Answer: 11