Keystones — Bedrock
Five GCSE retrieval questions · 17 October 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 30 + 83
Answer: 30 + 83 = 113 -
2. Algebra Substitution
If x = 10, find the value of 8x + 9
Answer: 89 -
3. Geometry Converting lengths
Convert 39cm to mm
Answer: 390mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:6
Answer: 4:1 -
5. Statistics Mean
Find the mean of: 19, 4, 8
Answer: 10.333333333333