Keystones — Lintel
Five GCSE retrieval questions · 8 November 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0026
Answer: 2.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 48°. Find adjacent side
Answer: 18.7cm -
4. Ratio Mixed ratio problems
In ratio 1:3:2, what fraction is the second part?
Answer: 3⁄6 -
5. Statistics Mean
Calculate the mean of: 28, 22, 33, 13, 27, 37
Answer: 26.7