Keystones — Bedrock
Five GCSE retrieval questions · 11 November 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 45 + 42
Answer: 45 + 42 = 87 -
2. Algebra Substitution
If x = 4, find the value of 2x + 11
Answer: 19 -
3. Geometry Converting lengths
Convert 15m to cm
Answer: 1500cm -
4. Ratio Simplifying ratios
Simplify the ratio 20:28
Answer: 5:7 -
5. Statistics Mean
Find the mean of: 2, 19, 10, 11
Answer: 10.5