Keystones — Lintel
Five GCSE retrieval questions · 12 May 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000057 in standard form
Answer: 5.7 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 40
Answer: (x + 10)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 43°. Find adjacent side. Give your answer to 2 decimal places
Answer: 25.6cm -
4. Ratio Mixed ratio problems
£196.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £140.00 -
5. Statistics Mean
Calculate the mean of: 50, 30, 48, 24, 9, 40
Answer: 33.5