Keystones — Lintel
Five GCSE retrieval questions · 14 February 2026 · mathsvault.uk/keystones
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1. Number
Find the total of 182, 254, and 83
Answer: 519 -
2. Algebra
Solve: 8x = 64
Answer: x = 8 -
3. Geometry
Opposite = 13cm, adjacent = 16cm. Calculate the angle
Answer: 39.1° -
4. Ratio
Simplify: 12:4:8
Answer: 3:1:2 -
5. Statistics
A bag has 4 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2