Keystones — Lintel
Five GCSE retrieval questions · 14 April 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 999 + 778
Answer: 1777 -
2. Algebra
Factorise: 8x² + 2x
Answer: 2x(4x + 1) -
3. Geometry
Opposite = 11cm, adjacent = 17cm. Calculate the angle
Answer: 32.9° -
4. Ratio
Calculate 44.3% of 465
Answer: 206 -
5. Statistics
A spinner has 5 red, 5 blue and 3 green sections. Probability of landing on red?
Answer: 5⁄13