Keystones — Lintel
Five GCSE retrieval questions · 2 December 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
9300000
Answer: 9.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 8
Answer: (x + 8)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 57°. Find adjacent side
Answer: 18.5cm -
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: 42, 23, 38, 48, 22, 29, 34
Answer: 33.7