Keystones — Bedrock
Five GCSE retrieval questions · 3 July 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 72 + 79
Answer: 72 + 79 = 151 -
2. Algebra Substitution
If x = 8, find the value of 4x + 7
Answer: 39 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 15:20
Answer: 3:4 -
5. Statistics Mean
Find the mean of: 8, 3, 7, 11, 8
Answer: 7.4