Keystones — Lintel
Five GCSE retrieval questions · 3 June 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0066
Answer: 6.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 52°. Find adjacent side
Answer: 24.6cm -
4. Ratio Mixed ratio problems
Express the first part of 2:5 as a fraction in simplest form
Answer: 2⁄7 -
5. Statistics Mean
Calculate the mean of: 32, 40, 11, 28, 39, 9, 8
Answer: 23.9