Keystones — Lintel
Five GCSE retrieval questions · 28 August 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 36,000 in standard form
Answer: 3.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 14x + 40
Answer: (x + 10)(x + 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places
Answer: 16.88cm -
4. Ratio Mixed ratio problems
Simplify: 18:9:9
Answer: 2:1:1 -
5. Statistics Mean
Calculate the mean of: 46, 39, 46, 18, 28, 22, 20, 47
Answer: 33.25