Keystones — Lintel
Five GCSE retrieval questions · 19 August 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
24000
Answer: 2.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 2)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 50°. Find opposite
Answer: 13.cm -
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: 17, 31, 12, 44, 50, 28, 8, 25
Answer: 26.9