Keystones — Lintel
Five GCSE retrieval questions · 1 August 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.058
Answer: 5.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 40°. Find adjacent side
Answer: 26cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 28, 16, 29, 26, 34, 6
Answer: 23.2