Keystones — Bedrock
Five GCSE retrieval questions · 4 September 2026 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 90
Answer: 21 + 90 = 111 -
2. Algebra Substitution
If x = 9, find the value of 6x + 9
Answer: 63 -
3. Geometry Converting lengths
Convert 23cm to mm
Answer: 230mm -
4. Ratio Simplifying ratios
Simplify the ratio 9:15
Answer: 3:5 -
5. Statistics Mean
Find the mean of: 17, 13, 15, 4
Answer: 12.25