Keystones — Lintel
Five GCSE retrieval questions · 7 March 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.002 in standard form
Answer: 2 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 23x + 132
Answer: (x - 11)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 39°. Find opposite. Give your answer to 2 decimal places
Answer: 22.67cm -
4. Ratio Mixed ratio problems
£246.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £82.00 -
5. Statistics Mean
Calculate the mean of: 32, 12, 17, 14, 21, 11, 27, 31. Give your answer to 2 decimal places
Answer: 20.63