Keystones — Bedrock
Five GCSE retrieval questions · 21 September 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 48
Answer: 31 + 48 = 79 -
2. Algebra Substitution
If x = 7, find the value of 6x + 8
Answer: 50 -
3. Geometry Converting lengths
Convert 17m to cm
Answer: 1700cm -
4. Ratio Simplifying ratios
Simplify the ratio 15:40
Answer: 3:8 -
5. Statistics Mean
Find the mean of: 18, 13, 11, 17, 6
Answer: 13