Keystones — Bedrock
Five GCSE retrieval questions · 16 August 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 68 + 78
Answer: 68 + 78 = 146 -
2. Algebra Substitution
If x = 3, find the value of 7x + 12
Answer: 33 -
3. Geometry Converting lengths
Convert 43cm to mm
Answer: 430mm -
4. Ratio Simplifying ratios
Simplify the ratio 28:24
Answer: 7:6 -
5. Statistics Mean
Find the mean of: 15, 15, 20
Answer: 16.666666666667