Keystones — Lintel
Five GCSE retrieval questions · 10 April 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
24000
Answer: 2.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 62°. Find adjacent side
Answer: 17.8cm -
4. Ratio Mixed ratio problems
In ratio 4:1:4, what fraction is the second part?
Answer: 1⁄9 -
5. Statistics Mean
Calculate the mean of: 18, 20, 46, 25, 11, 21, 12, 12
Answer: 20.6