Keystones — Lintel
Five GCSE retrieval questions · 1 April 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 5,000,000 in standard form
Answer: 5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 63
Answer: (x + 7)(x - 9) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 47°. Find opposite. Give your answer to 2 decimal places
Answer: 27.88cm -
4. Ratio Mixed ratio problems
£258.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £172.00 -
5. Statistics Mean
Calculate the mean of: 31, 34, 8, 8, 29, 27, 9, 41. Give your answer to 2 decimal places
Answer: 23.38