Keystones — Lintel
Five GCSE retrieval questions · 26 March 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0091 in standard form
Answer: 9.1 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 54
Answer: (x + 9)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 64°. Find adjacent side. Give your answer to 2 decimal places
Answer: 15.34cm -
4. Ratio Mixed ratio problems
£266.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £76.00 -
5. Statistics Mean
Calculate the mean of: 33, 48, 26, 46, 22, 10. Give your answer to 2 decimal places
Answer: 30.83