Keystones — Lintel
Five GCSE retrieval questions · 10 June 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0025 in standard form
Answer: 2.5 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 2
Answer: (x + 1)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 26°. Find adjacent side. Give your answer to 2 decimal places
Answer: 33.26cm -
4. Ratio Mixed ratio problems
£120.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £72.00 -
5. Statistics Mean
Calculate the mean of: 46, 12, 27, 44, 16, 45. Give your answer to 2 decimal places
Answer: 31.67