Keystones — Lintel
Five GCSE retrieval questions · 1 September 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.04 in standard form
Answer: 4 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 27
Answer: (x + 9)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 55°. Find adjacent side. Give your answer to 2 decimal places
Answer: 14.91cm -
4. Ratio Mixed ratio problems
£405.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £225.00 -
5. Statistics Mean
Calculate the mean of: 16, 29, 21, 16, 49, 11, 34, 16
Answer: 24