Keystones — Lintel
Five GCSE retrieval questions · 10 October 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
6500000
Answer: 6.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 33°. Find adjacent side
Answer: 26.8cm -
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: 20, 24, 28, 9, 20, 34, 12
Answer: 21