Keystones — Bedrock
Five GCSE retrieval questions · 23 March 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 77 + 21
Answer: 77 + 21 = 98 -
2. Algebra Substitution
If x = 5, find the value of 2x + 5
Answer: 15 -
3. Geometry Converting lengths
Convert 19cm to mm
Answer: 190mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:40
Answer: 5:8 -
5. Statistics Mean
Find the mean of: 5, 20, 8
Answer: 11