Keystones — Lintel
Five GCSE retrieval questions · 27 July 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
970000
Answer: 9.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 51°. Find opposite
Answer: 17.3cm -
4. Ratio Mixed ratio problems
Express the first part of 6:5 as a fraction in simplest form
Answer: 6⁄11 -
5. Statistics Mean
Calculate the mean of: 6, 35, 10, 38, 41, 25, 22, 21
Answer: 24.8