Keystones — Bedrock
Five GCSE retrieval questions · 29 March 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 77 + 95
Answer: 77 + 95 = 172 -
2. Algebra Substitution
If x = 10, find the value of 3x + 8
Answer: 38 -
3. Geometry Converting lengths
Convert 8cm to mm
Answer: 80mm -
4. Ratio Simplifying ratios
Simplify the ratio 9:24
Answer: 3:8 -
5. Statistics Mean
Find the mean of: 16, 20, 20
Answer: 18.666666666667