Keystones — Lintel
Five GCSE retrieval questions · 28 May 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0027
Answer: 2.7 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 62°. Find adjacent side
Answer: 13.cm -
4. Ratio Mixed ratio problems
Divide 60 in the ratio 1:2:3
Answer: 10, 20 and 30 -
5. Statistics Mean
Calculate the mean of: 23, 33, 7, 30, 5, 34, 28
Answer: 22.9