Keystones — Lintel
Five GCSE retrieval questions · 21 May 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 9,000,000 in standard form
Answer: 9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 10
Answer: (x - 2)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places
Answer: 27.51cm -
4. Ratio Mixed ratio problems
In ratio 4:4:1, what fraction is the first part?
Answer: 4⁄9 -
5. Statistics Mean
Calculate the mean of: 28, 20, 43, 11, 13, 32, 33, 37. Give your answer to 2 decimal places
Answer: 27.13