Keystones — Bedrock
Five GCSE retrieval questions · 31 March 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 49 + 15
Answer: 49 + 15 = 64 -
2. Algebra Substitution
If x = 10, find the value of 5x + 10
Answer: 60 -
3. Geometry Converting lengths
Convert 38cm to mm
Answer: 380mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:25
Answer: 4:5 -
5. Statistics Mean
Find the mean of: 17, 17, 17, 17, 9
Answer: 15.4