Keystones — Lintel
Five GCSE retrieval questions · 28 October 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000058 in standard form
Answer: 5.8 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² - 16x + 60
Answer: (x - 6)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 64°. Find adjacent side. Give your answer to 2 decimal places
Answer: 13.15cm -
4. Ratio Mixed ratio problems
£189.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £54.00 -
5. Statistics Mean
Calculate the mean of: 10, 11, 25, 8, 35, 17, 22. Give your answer to 2 decimal places
Answer: 18.29