Keystones — Lintel
Five GCSE retrieval questions · 18 November 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00055
Answer: 5.5 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 21cm, angle = 41°. Find adjacent side
Answer: 15.8cm -
4. Ratio Mixed ratio problems
Divide 104 in the ratio 1:1:2
Answer: 26, 26 and 52 -
5. Statistics Mean
Calculate the mean of: 44, 11, 11, 34, 35, 37, 23, 41
Answer: 29.5