Keystones — Lintel
Five GCSE retrieval questions · 17 March 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
5500000
Answer: 5.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 2)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 60°. Find adjacent side
Answer: 15cm -
4. Ratio Mixed ratio problems
Simplify: 10:6:6
Answer: 5:3:3 -
5. Statistics Mean
Calculate the mean of: 25, 23, 15, 28, 32, 39, 43, 40
Answer: 30.6