Keystones — Lintel
Five GCSE retrieval questions · 29 August 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
3600000
Answer: 3.6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 29°. Find adjacent side
Answer: 35cm -
4. Ratio Mixed ratio problems
Divide 203 in the ratio 1:3:3
Answer: 29, 87 and 87 -
5. Statistics Mean
Calculate the mean of: 19, 48, 27, 40, 33, 19, 9
Answer: 27.9