Keystones — Lintel
Five GCSE retrieval questions · 7 May 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 7,900,000 in standard form
Answer: 7.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 24
Answer: (x + 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places
Answer: 15.25cm -
4. Ratio Mixed ratio problems
£270.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £120.00 -
5. Statistics Mean
Calculate the mean of: 44, 37, 41, 13, 32, 27, 10, 33. Give your answer to 2 decimal places
Answer: 29.63