Keystones — Lintel
Five GCSE retrieval questions · 6 June 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0057 in standard form
Answer: 5.7 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x - 60
Answer: (x + 6)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 32°. Find opposite. Give your answer to 2 decimal places
Answer: 6.87cm -
4. Ratio Mixed ratio problems
£162.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £54.00 -
5. Statistics Mean
Calculate the mean of: 18, 11, 22, 21, 45, 25, 25. Give your answer to 2 decimal places
Answer: 23.86