Keystones — Lintel
Five GCSE retrieval questions · 3 May 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 366 + 475
Answer: 366 + 475 = 841 -
2. Algebra
Solve: 5x = 65
Answer: x = 13 -
3. Geometry
Opposite = 11cm, adjacent = 15cm. Calculate the angle
Answer: 36.3° -
4. Ratio
Simplify: 12:8:6
Answer: 6:4:3 -
5. Statistics
A bag has 4 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2