Keystones — Lintel
Five GCSE retrieval questions · 8 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 4⁄6 + 1⁄3 + 3⁄4
Answer: 7⁄4 -
2. Algebra
Solve: 2x = 22
Answer: x = 11 -
3. Geometry
A circle has area 314.2cm². Find its radius (dp)
Answer: 10cm -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A bag has 8 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 8⁄11