Keystones — Lintel
Five GCSE retrieval questions · 2 December 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 7,300,000 in standard form
Answer: 7.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 108
Answer: (x + 12)(x - 9) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 33°. Find adjacent side. Give your answer to 2 decimal places
Answer: 33.55cm -
4. Ratio Mixed ratio problems
£344.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £215.00 -
5. Statistics Mean
Calculate the mean of: 7, 33, 5, 31, 34, 13
Answer: 20.5