Keystones — Bedrock
Five GCSE retrieval questions · 22 August 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 29 + 28
Answer: 29 + 28 = 57 -
2. Algebra Substitution
If x = 3, find the value of 5x + 3
Answer: 18 -
3. Geometry Converting lengths
Convert 8cm to mm
Answer: 80mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:20
Answer: 5:4 -
5. Statistics Mean
Find the mean of: 18, 10, 4, 18
Answer: 12.5