Keystones — Lintel
Five GCSE retrieval questions · 25 May 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 57,000 in standard form
Answer: 5.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 14
Answer: (x + 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 50°. Find adjacent side. Give your answer to 2 decimal places
Answer: 25.71cm -
4. Ratio Mixed ratio problems
£287.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £205.00 -
5. Statistics Mean
Calculate the mean of: 16, 41, 27, 13, 23, 30, 30, 37. Give your answer to 2 decimal places
Answer: 27.13