Keystones — Lintel
Five GCSE retrieval questions · 24 August 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
650000
Answer: 6.5 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 10
Answer: (x - 2)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 43°. Find adjacent side
Answer: 18.3cm -
4. Ratio Mixed ratio problems
Express the first part of 4:2 as a fraction in simplest form
Answer: 2⁄3 -
5. Statistics Mean
Calculate the mean of: 6, 50, 15, 39, 5, 49
Answer: 27.3