Keystones — Bedrock
Five GCSE retrieval questions · 18 December 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 80 + 52
Answer: 80 + 52 = 132 -
2. Algebra Substitution
If x = 10, find the value of 4x + 9
Answer: 49 -
3. Geometry Converting lengths
Convert 23cm to mm
Answer: 230mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:15
Answer: 5:3 -
5. Statistics Mean
Find the mean of: 11, 18, 9, 2, 12
Answer: 10.4