Keystones — Lintel
Five GCSE retrieval questions · 21 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
54000000
Answer: 5.4 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 49°. Find adjacent side
Answer: 20.3cm -
4. Ratio Mixed ratio problems
In ratio 1:3:4, what fraction is the second part?
Answer: 3⁄8 -
5. Statistics Mean
Calculate the mean of: 8, 34, 24, 42, 13, 32, 18
Answer: 24.4