Keystones — Lintel
Five GCSE retrieval questions · 15 March 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 77,000,000 in standard form
Answer: 7.7 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 40
Answer: (x - 5)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 44°. Find adjacent side. Give your answer to 2 decimal places
Answer: 11.51cm -
4. Ratio Mixed ratio problems
£182.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £78.00 -
5. Statistics Mean
Calculate the mean of: 49, 37, 5, 39, 20, 36, 15, 17
Answer: 27.25