Keystones — Bedrock
Five GCSE retrieval questions · 11 October 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 25 + 36
Answer: 25 + 36 = 61 -
2. Algebra Substitution
If x = 9, find the value of 8x + 10
Answer: 82 -
3. Geometry Converting lengths
Convert 50cm to mm
Answer: 500mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:6
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 16, 15, 13, 13, 17
Answer: 14.8