Keystones — Lintel
Five GCSE retrieval questions · 13 May 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
32000
Answer: 3.2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 2)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 31°. Find adjacent side
Answer: 27.4cm -
4. Ratio Mixed ratio problems
In ratio 3:3:4, what fraction is the second part?
Answer: 3⁄10 -
5. Statistics Mean
Calculate the mean of: 48, 21, 45, 49, 34, 44, 20, 44
Answer: 38.1