Keystones — Lintel
Five GCSE retrieval questions · 13 October 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 960,000,000 in standard form
Answer: 9.6 × 108 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 35
Answer: (x + 5)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 31°. Find opposite. Give your answer to 2 decimal places
Answer: 16.82cm -
4. Ratio Mixed ratio problems
£296.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £111.00 -
5. Statistics Mean
Calculate the mean of: 44, 14, 46, 19, 27, 16. Give your answer to 2 decimal places
Answer: 27.67