Keystones — Lintel
Five GCSE retrieval questions · 21 January 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
5300000
Answer: 5.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 4)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 62°. Find adjacent side
Answer: 17.4cm -
4. Ratio Mixed ratio problems
Simplify: 8:12:24
Answer: 2:3:6 -
5. Statistics Mean
Calculate the mean of: 11, 26, 22, 49, 38, 32
Answer: 29.7