Keystones — Lintel
Five GCSE retrieval questions · 19 April 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
360000
Answer: 3.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 30°. Find opposite
Answer: 9.2cm -
4. Ratio Mixed ratio problems
Express the first part of 6:3 as a fraction in simplest form
Answer: 2⁄3 -
5. Statistics Mean
Calculate the mean of: 23, 27, 34, 50, 26, 44, 15, 26
Answer: 30.6