Keystones — Bedrock
Five GCSE retrieval questions · 17 February 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 23 + 17
Answer: 23 + 17 = 40 -
2. Algebra Substitution
If x = 7, find the value of 2x + 3
Answer: 17 -
3. Geometry Converting lengths
Convert 14cm to mm
Answer: 140mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:10
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 7, 7, 13, 9, 6
Answer: 8.4