Keystones — Lintel
Five GCSE retrieval questions · 19 March 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000049 in standard form
Answer: 4.9 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 11
Answer: (x - 1)(x - 11) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 36°. Find opposite. Give your answer to 2 decimal places
Answer: 10.9cm -
4. Ratio Mixed ratio problems
£234.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £104.00 -
5. Statistics Mean
Calculate the mean of: 47, 15, 47, 32, 36, 43, 29. Give your answer to 2 decimal places
Answer: 35.57