Keystones — Bedrock
Five GCSE retrieval questions · 20 October 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 42 + 58
Answer: 42 + 58 = 100 -
2. Algebra Substitution
If x = 2, find the value of 5x + 10
Answer: 20 -
3. Geometry Converting lengths
Convert 14cm to mm
Answer: 140mm -
4. Ratio Simplifying ratios
Simplify the ratio 21:12
Answer: 7:4 -
5. Statistics Mean
Find the mean of: 12, 4, 13
Answer: 9.6666666666667