Keystones — Lintel
Five GCSE retrieval questions · 27 August 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 6,000,000 in standard form
Answer: 6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x - 6
Answer: (x + 1)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 24cm, angle = 31°. Find adjacent side. Give your answer to 2 decimal places
Answer: 20.57cm -
4. Ratio Mixed ratio problems
Black and white sweets are in the ratio 13:10. What fraction of the sweets are white?
Answer: 10⁄23 -
5. Statistics Mean
Calculate the mean of: 32, 49, 49, 35, 13, 33, 37. Give your answer to 2 decimal places
Answer: 35.43