Keystones — Lintel
Five GCSE retrieval questions · 24 January 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
3300000
Answer: 3.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 4)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 27°. Find adjacent side
Answer: 15.cm -
4. Ratio Mixed ratio problems
In ratio 2:1:3, what fraction is the second part?
Answer: 1⁄6 -
5. Statistics Mean
Calculate the mean of: 37, 39, 5, 18, 17, 30
Answer: 24.3