Keystones — Lintel
Five GCSE retrieval questions · 31 December 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 22,000 in standard form
Answer: 2.2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 36
Answer: (x + 9)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places
Answer: 16.9cm -
4. Ratio Mixed ratio problems
In ratio 4:10:1, what fraction is the second part?
Answer: 2⁄3 -
5. Statistics Mean
Calculate the mean of: 8, 40, 23, 24, 37, 50. Give your answer to 2 decimal places
Answer: 30.33