Keystones — Bedrock
Five GCSE retrieval questions · 9 August 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 20 + 31
Answer: 20 + 31 = 51 -
2. Algebra Substitution
If x = 3, find the value of 4x + 3
Answer: 15 -
3. Geometry Converting lengths
Convert 32cm to mm
Answer: 320mm -
4. Ratio Simplifying ratios
Simplify the ratio 40:10
Answer: 4:1 -
5. Statistics Mean
Find the mean of: 4, 16, 3, 8, 17
Answer: 9.6