Keystones — Lintel
Five GCSE retrieval questions · 13 June 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
8000000
Answer: 8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 65°. Find adjacent side
Answer: 10.6cm -
4. Ratio Mixed ratio problems
In ratio 4:1:2, what fraction is the second part?
Answer: 1⁄7 -
5. Statistics Mean
Calculate the mean of: 27, 33, 12, 15, 30, 14, 10
Answer: 20.1