Keystones — Lintel
Five GCSE retrieval questions · 1 September 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.079
Answer: 7.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 59°. Find adjacent side
Answer: 9.8cm -
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: 45, 18, 45, 45, 28, 38, 18
Answer: 33.9