Keystones — Lintel
Five GCSE retrieval questions · 9 May 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
76000000
Answer: 7.6 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 2)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 32°. Find opposite
Answer: 16.9cm -
4. Ratio Mixed ratio problems
Express the first part of 2:6 as a fraction in simplest form
Answer: 1⁄4 -
5. Statistics Mean
Calculate the mean of: 7, 29, 15, 12, 9, 14, 38
Answer: 17.7