Keystones — Lintel
Five GCSE retrieval questions · 10 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 655 + 254
Answer: 655 + 254 = 909 -
2. Algebra
Solve: 2x = 12
Answer: x = 6 -
3. Geometry
Opposite = 15cm, adjacent = 20cm. Calculate the angle
Answer: 36.9° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
A bag has 8 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 2⁄3