Keystones — Bedrock
Five GCSE retrieval questions · 3 September 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 15 + 39
Answer: 15 + 39 = 54 -
2. Algebra Substitution
If x = 8, find the value of 5x + 12
Answer: 52 -
3. Geometry Converting lengths
Convert 8m to cm
Answer: 800cm -
4. Ratio Simplifying ratios
Simplify the ratio 16:8
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 11, 8, 20, 19
Answer: 14.5