Keystones — Lintel
Five GCSE retrieval questions · 26 November 2010 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000034 in standard form
Answer: 3.4 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² - 16x + 64
Answer: (x - 8)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 51°. Find adjacent side. Give your answer to 2 decimal places
Answer: 16.99cm -
4. Ratio Mixed ratio problems
£350.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £250.00 -
5. Statistics Mean
Calculate the mean of: 19, 37, 27, 13, 7, 19, 14. Give your answer to 2 decimal places
Answer: 19.43