Keystones — Lintel
Five GCSE retrieval questions · 23 April 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.067 in standard form
Answer: 6.7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 56
Answer: (x + 7)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 56°. Find opposite. Give your answer to 2 decimal places
Answer: 40.03cm -
4. Ratio Mixed ratio problems
£217.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £155.00 -
5. Statistics Mean
Calculate the mean of: 9, 34, 36, 36, 22, 43
Answer: 30