Keystones — Lintel
Five GCSE retrieval questions · 9 May 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 32,000 in standard form
Answer: 3.2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x - 44
Answer: (x + 4)(x - 11) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places
Answer: 20.48cm -
4. Ratio Mixed ratio problems
Simplify: 24:24:12
Answer: 2:2:1 -
5. Statistics Mean
Calculate the mean of: 13, 36, 43, 11, 6, 33, 15, 11
Answer: 21