Keystones — Lintel
Five GCSE retrieval questions · 27 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄5 + 1⁄5 + 1⁄3
Answer: 11⁄15 -
2. Algebra
Solve: 4x = 28
Answer: x = 7 -
3. Geometry
Opposite = 12cm, adjacent = 16cm. Calculate the angle
Answer: 36.9° -
4. Ratio
Find 48% of 272
Answer: 130.56 -
5. Statistics
A bag has 5 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 5⁄13