Keystones — Bedrock
Five GCSE retrieval questions · 22 September 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 18 + 15
Answer: 18 + 15 = 33 -
2. Algebra Substitution
If x = 5, find the value of 2x + 3
Answer: 13 -
3. Geometry Converting lengths
Convert 12m to cm
Answer: 1200cm -
4. Ratio Simplifying ratios
Simplify the ratio 24:12
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 15, 16, 16, 20
Answer: 16.75