Keystones — Lintel
Five GCSE retrieval questions · 9 October 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 7,300,000 in standard form
Answer: 7.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 12
Answer: (x + 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 55°. Find opposite. Give your answer to 2 decimal places
Answer: 25.71cm -
4. Ratio Mixed ratio problems
£245.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £140.00 -
5. Statistics Mean
Calculate the mean of: 5, 19, 5, 25, 36, 14, 35. Give your answer to 2 decimal places
Answer: 19.86