Keystones — Lintel
Five GCSE retrieval questions · 9 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄3 + 1⁄2 + 5⁄6
Answer: 5⁄3 -
2. Algebra
What is the next term? 3, 12, 48, 192, ...
Answer: 768 -
3. Geometry
A circle has area 78.5cm². Find its radius (dp)
Answer: 5cm -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 42, 45, 9, 37, 5, 13
Answer: 25.2