Keystones — Lintel
Five GCSE retrieval questions · 5 September 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
770000
Answer: 7.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 40°. Find adjacent side
Answer: 17.6cm -
4. Ratio Mixed ratio problems
Express the first part of 3:4 as a fraction in simplest form
Answer: 3⁄7 -
5. Statistics Mean
Calculate the mean of: 6, 26, 47, 11, 27, 37, 37
Answer: 27.3