Keystones — Lintel
Five GCSE retrieval questions · 4 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
710000
Answer: 7.1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 43°. Find adjacent side
Answer: 26.3cm -
4. Ratio Mixed ratio problems
Express the first part of 6:2 as a fraction in simplest form
Answer: 3⁄4 -
5. Statistics Mean
Calculate the mean of: 38, 44, 30, 14, 18, 39, 13
Answer: 28