Keystones — Lintel
Five GCSE retrieval questions · 19 June 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
28000
Answer: 2.8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 4
Answer: (x + 4)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 48°. Find adjacent side
Answer: 22.cm -
4. Ratio Mixed ratio problems
Express the first part of 4:2 as a fraction in simplest form
Answer: 2⁄3 -
5. Statistics Mean
Calculate the mean of: 6, 5, 11, 36, 13, 31, 16
Answer: 16.9