Keystones — Lintel
Five GCSE retrieval questions · 2 January 2026 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.014
Answer: 1.4 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 29cm, angle = 44°. Find adjacent side
Answer: 20.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 38, 29, 50, 22, 40, 32
Answer: 35.2