Keystones — Lintel
Five GCSE retrieval questions · 4 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 931 + 253
Answer: 931 + 253 = 1184 -
2. Algebra
Factorise: 7x² + 2x
Answer: x(7x + 2) -
3. Geometry
Opposite = 9cm, adjacent = 20cm. Calculate the angle
Answer: 24.2° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 12, 27, 50, 5, 33, 44, 7
Answer: 25.4