Keystones — Lintel
Five GCSE retrieval questions · 12 March 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
180000
Answer: 1.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 60°. Find adjacent side
Answer: 15.5cm -
4. Ratio Mixed ratio problems
In ratio 4:4:3, what fraction is the second part?
Answer: 4⁄11 -
5. Statistics Mean
Calculate the mean of: 10, 43, 6, 22, 50, 44, 48, 48
Answer: 33.9