Keystones — Bedrock
Five GCSE retrieval questions · 28 September 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 28 + 21
Answer: 28 + 21 = 49 -
2. Algebra Substitution
If x = 9, find the value of 5x + 9
Answer: 54 -
3. Geometry Converting lengths
Convert 11cm to mm
Answer: 110mm -
4. Ratio Simplifying ratios
Simplify the ratio 18:6
Answer: 3:1 -
5. Statistics Mean
Find the mean of: 3, 6, 19
Answer: 9.3333333333333