Keystones — Lintel
Five GCSE retrieval questions · 28 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
980000
Answer: 9.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 56°. Find adjacent side
Answer: 15.7cm -
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: 38, 38, 34, 35, 33, 30, 26, 19
Answer: 31.6