Keystones — Lintel
Five GCSE retrieval questions · 9 May 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
28000
Answer: 2.8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x + 4
Answer: (x - 2)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 41°. Find adjacent side
Answer: 22.6cm -
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: 21, 16, 33, 45, 25, 27, 6
Answer: 24.7