Keystones — Bedrock
Five GCSE retrieval questions · 19 October 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 36 + 16
Answer: 36 + 16 = 52 -
2. Algebra Substitution
If x = 4, find the value of 2x + 9
Answer: 17 -
3. Geometry Converting lengths
Convert 21cm to mm
Answer: 210mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:25
Answer: 4:5 -
5. Statistics Mean
Find the mean of: 10, 10, 7, 9, 12
Answer: 9.6