Keystones — Lintel
Five GCSE retrieval questions · 25 January 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 740,000 in standard form
Answer: 7.4 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x - 45
Answer: (x + 5)(x - 9) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 44°. Find adjacent side. Give your answer to 2 decimal places
Answer: 22.3cm -
4. Ratio Mixed ratio problems
In ratio 9:1:5, what fraction is the second part?
Answer: 1⁄15 -
5. Statistics Mean
Calculate the mean of: 46, 19, 7, 10, 13, 48. Give your answer to 2 decimal places
Answer: 23.83