Keystones — Lintel
Five GCSE retrieval questions · 24 April 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0013 in standard form
Answer: 1.3 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 19x + 84
Answer: (x - 7)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 59°. Find adjacent side. Give your answer to 2 decimal places
Answer: 14.42cm -
4. Ratio Mixed ratio problems
£189.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £81.00 -
5. Statistics Mean
Calculate the mean of: 37, 41, 10, 13, 46, 7. Give your answer to 2 decimal places
Answer: 25.67