Keystones — Bedrock
Five GCSE retrieval questions · 11 December 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 40 + 17
Answer: 40 + 17 = 57 -
2. Algebra Substitution
If x = 6, find the value of 5x + 6
Answer: 36 -
3. Geometry Converting lengths
Convert 33cm to mm
Answer: 330mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:30
Answer: 5:6 -
5. Statistics Mean
Find the mean of: 18, 15, 10
Answer: 14.333333333333