Keystones — Lintel
Five GCSE retrieval questions · 21 January 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000052 in standard form
Answer: 5.2 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 6
Answer: (x + 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 47°. Find adjacent side. Give your answer to 2 decimal places
Answer: 25.23cm -
4. Ratio Mixed ratio problems
£336.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £240.00 -
5. Statistics Mean
Calculate the mean of: 24, 34, 17, 5, 45, 24, 19, 8
Answer: 22