Keystones — Lintel
Five GCSE retrieval questions · 27 September 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 66,000,000 in standard form
Answer: 6.6 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 60
Answer: (x + 12)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 29°. Find adjacent side. Give your answer to 2 decimal places
Answer: 13.99cm -
4. Ratio Mixed ratio problems
£296.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £111.00 -
5. Statistics Mean
Calculate the mean of: 11, 22, 40, 25, 13, 36
Answer: 24.5