Keystones — Lintel
Five GCSE retrieval questions · 22 August 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
22000000
Answer: 2.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 52°. Find adjacent side
Answer: 19.cm -
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: 50, 29, 43, 17, 19, 11
Answer: 28.2