Keystones — Lintel
Five GCSE retrieval questions · 14 October 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.023
Answer: 2.3 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 40°. Find adjacent side
Answer: 24.5cm -
4. Ratio Mixed ratio problems
Express the first part of 2:3 as a fraction in simplest form
Answer: 2⁄5 -
5. Statistics Mean
Calculate the mean of: 34, 41, 31, 27, 14, 14, 36
Answer: 28.1