Keystones — Lintel
Five GCSE retrieval questions · 28 May 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
1800000
Answer: 1.8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 10
Answer: (x + 5)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 54°. Find adjacent side
Answer: 18.2cm -
4. Ratio Mixed ratio problems
Divide 160 in the ratio 3:3:2
Answer: 60, 60 and 40 -
5. Statistics Mean
Calculate the mean of: 21, 34, 12, 30, 25, 11, 35, 13
Answer: 22.6