Keystones — Bedrock
Five GCSE retrieval questions · 16 December 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 = 8, find the value of 3x + 12
Answer: 36 -
3. Geometry Converting lengths
Convert 46cm to mm
Answer: 460mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:30
Answer: 5:6 -
5. Statistics Mean
Find the mean of: 11, 19, 9
Answer: 13