Keystones — Lintel
Five GCSE retrieval questions · 15 November 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
120000
Answer: 1.2 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 10
Answer: (x - 2)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 28°. Find adjacent side
Answer: 34.4cm -
4. Ratio Mixed ratio problems
Express the first part of 5:4 as a fraction in simplest form
Answer: 5⁄9 -
5. Statistics Mean
Calculate the mean of: 31, 11, 8, 31, 43, 11, 26
Answer: 23