Keystones — Lintel
Five GCSE retrieval questions · 13 April 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 290,000,000 in standard form
Answer: 2.9 × 108 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 60
Answer: (x + 12)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 63°. Find adjacent side. Give your answer to 2 decimal places
Answer: 10.44cm -
4. Ratio Mixed ratio problems
£250.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £150.00 -
5. Statistics Mean
Calculate the mean of: 41, 39, 6, 27, 28, 41, 9, 16. Give your answer to 2 decimal places
Answer: 25.88