Keystones — Lintel
Five GCSE retrieval questions · 27 February 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.051
Answer: 5.1 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 57°. Find adjacent side
Answer: 19.cm -
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: 34, 14, 31, 23, 50, 28, 19, 37
Answer: 29.5