Keystones — Bedrock
Five GCSE retrieval questions · 24 March 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 48 + 75
Answer: 48 + 75 = 123 -
2. Algebra Substitution
If x = 2, find the value of 4x + 5
Answer: 13 -
3. Geometry Converting lengths
Convert 19cm to mm
Answer: 190mm -
4. Ratio Simplifying ratios
Simplify the ratio 21:18
Answer: 7:6 -
5. Statistics Mean
Find the mean of: 5, 4, 17
Answer: 8.6666666666667