Keystones — Lintel
Five GCSE retrieval questions · 6 April 2010 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 300,000 in standard form
Answer: 3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 72
Answer: (x + 12)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 30°. Find adjacent side. Give your answer to 2 decimal places
Answer: 30.31cm -
4. Ratio Mixed ratio problems
£287.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £82.00 -
5. Statistics Mean
Calculate the mean of: 48, 14, 18, 6, 9, 26. Give your answer to 2 decimal places
Answer: 20.17