Keystones — Lintel
Five GCSE retrieval questions · 4 August 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 550,000 in standard form
Answer: 5.5 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 15
Answer: (x + 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 26°. Find adjacent side. Give your answer to 2 decimal places
Answer: 17.08cm -
4. Ratio Mixed ratio problems
£423.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £188.00 -
5. Statistics Mean
Calculate the mean of: 16, 14, 7, 13, 5, 41, 41. Give your answer to 2 decimal places
Answer: 19.57