Keystones — Lintel
Five GCSE retrieval questions · 20 June 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 35,000 in standard form
Answer: 3.5 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 20x + 96
Answer: (x + 12)(x + 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 44°. Find opposite. Give your answer to 2 decimal places
Answer: 27.04cm -
4. Ratio Mixed ratio problems
£287.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £82.00 -
5. Statistics Mean
Calculate the mean of: 5, 46, 17, 30, 41, 46, 13. Give your answer to 2 decimal places
Answer: 28.29