Keystones — Lintel
Five GCSE retrieval questions · 28 June 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0067 in standard form
Answer: 6.7 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x - 10
Answer: (x + 1)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 50°. Find adjacent side. Give your answer to 2 decimal places
Answer: 18cm -
4. Ratio Mixed ratio problems
£216.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £81.00 -
5. Statistics Mean
Calculate the mean of: 49, 5, 41, 36, 46, 15, 46
Answer: 34