Keystones — Lintel
Five GCSE retrieval questions · 27 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0049
Answer: 4.9 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 48°. Find opposite
Answer: 16.7cm -
4. Ratio Mixed ratio problems
Express the first part of 6:4 as a fraction in simplest form
Answer: 3⁄5 -
5. Statistics Mean
Calculate the mean of: 27, 28, 38, 30, 41, 5
Answer: 28.2