Keystones — Lintel
Five GCSE retrieval questions · 1 December 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.07
Answer: 7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 35
Answer: (x + 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 22cm, angle = 30°. Find adjacent side
Answer: 19.cm -
4. Ratio Mixed ratio problems
In ratio 1:2:1, what fraction is the second part?
Answer: 2⁄4 -
5. Statistics Mean
Calculate the mean of: 34, 10, 39, 44, 38, 43
Answer: 34.7