Keystones — Lintel
Five GCSE retrieval questions · 1 October 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000075 in standard form
Answer: 7.5 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x - 77
Answer: (x + 7)(x - 11) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places
Answer: 26.7cm -
4. Ratio Mixed ratio problems
£198.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £110.00 -
5. Statistics Mean
Calculate the mean of: 36, 43, 30, 14, 35, 40
Answer: 33