Keystones — Lintel
Five GCSE retrieval questions · 18 March 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
94000000
Answer: 9.4 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 63°. Find adjacent side
Answer: 14.cm -
4. Ratio Mixed ratio problems
Express the first part of 6:4 as a fraction in simplest form
Answer: 3⁄5 -
5. Statistics Mean
Calculate the mean of: 12, 37, 30, 9, 22, 34, 39, 49
Answer: 29