Keystones — Lintel
Five GCSE retrieval questions · 10 September 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 8,400,000 in standard form
Answer: 8.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 12
Answer: (x - 1)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 32°. Find adjacent side. Give your answer to 2 decimal places
Answer: 23.75cm -
4. Ratio Mixed ratio problems
£245.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £70.00 -
5. Statistics Mean
Calculate the mean of: 48, 34, 8, 9, 22, 14
Answer: 22.5