Keystones — Lintel
Five GCSE retrieval questions · 15 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 693 + 260
Answer: 693 + 260 = 953 -
2. Algebra
Solve: 2x = 26
Answer: x = 13 -
3. Geometry
Adjacent = 15cm, hypotenuse = 33cm. Find the angle
Answer: 63° -
4. Ratio
Find 45% of 293
Answer: 131.85 -
5. Statistics
Find the range of: -18, -20, 45, -12, -24
Answer: 69