Keystones — Bedrock
Five GCSE retrieval questions · 6 October 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 47
Answer: 31 + 47 = 78 -
2. Algebra Substitution
If x = 6, find the value of 8x + 6
Answer: 54 -
3. Geometry Converting lengths
Convert 23cm to mm
Answer: 230mm -
4. Ratio Simplifying ratios
Simplify the ratio 32:24
Answer: 4:3 -
5. Statistics Mean
Find the mean of: 15, 15, 12, 19
Answer: 15.25