Keystones — Lintel
Five GCSE retrieval questions · 7 November 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 92,000,000 in standard form
Answer: 9.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 4
Answer: (x + 4)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 59°. Find opposite. Give your answer to 2 decimal places
Answer: 21.64cm -
4. Ratio Mixed ratio problems
£342.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £190.00 -
5. Statistics Mean
Calculate the mean of: 37, 36, 45, 9, 20, 50. Give your answer to 2 decimal places
Answer: 32.83