Keystones — Lintel
Five GCSE retrieval questions · 24 February 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 340,000 in standard form
Answer: 3.4 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 18
Answer: (x + 9)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 54°. Find opposite. Give your answer to 2 decimal places
Answer: 30.28cm -
4. Ratio Mixed ratio problems
£350.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £100.00 -
5. Statistics Mean
Calculate the mean of: 31, 25, 48, 10, 15, 31, 45. Give your answer to 2 decimal places
Answer: 29.29