Keystones — Bedrock
Five GCSE retrieval questions · 16 February 2026 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 23 + 47
Answer: 23 + 47 = 70 -
2. Algebra Substitution
If x = 8, find the value of 4x + 4
Answer: 36 -
3. Geometry Converting lengths
Convert 37cm to mm
Answer: 370mm -
4. Ratio Simplifying ratios
Simplify the ratio 21:18
Answer: 7:6 -
5. Statistics Mean
Find the mean of: 4, 16, 10, 2
Answer: 8