Keystones — Lintel
Five GCSE retrieval questions · 21 December 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 330,000 in standard form
Answer: 3.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 12
Answer: (x - 1)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 38°. Find adjacent side. Give your answer to 2 decimal places
Answer: 27.58cm -
4. Ratio Mixed ratio problems
Simplify: 15:18:12
Answer: 5:6:4 -
5. Statistics Mean
Calculate the mean of: 30, 15, 17, 23, 43, 9, 36, 25
Answer: 24.75