Keystones — Lintel
Five GCSE retrieval questions · 25 February 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0026
Answer: 2.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 33°. Find adjacent side
Answer: 21cm -
4. Ratio Mixed ratio problems
Divide 119 in the ratio 2:2:3
Answer: 34, 34 and 51 -
5. Statistics Mean
Calculate the mean of: 22, 27, 49, 21, 13, 10, 21, 8
Answer: 21.4