Keystones — Bedrock
Five GCSE retrieval questions · 23 December 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 49 + 18
Answer: 49 + 18 = 67 -
2. Algebra Substitution
If x = 3, find the value of 4x + 12
Answer: 24 -
3. Geometry Converting lengths
Convert 23cm to mm
Answer: 230mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:18
Answer: 4:3 -
5. Statistics Mean
Find the mean of: 17, 19, 13
Answer: 16.333333333333