Keystones — Lintel
Five GCSE retrieval questions · 3 January 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0027 in standard form
Answer: 2.7 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x - 24
Answer: (x + 2)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 29°. Find adjacent side. Give your answer to 2 decimal places
Answer: 28.86cm -
4. Ratio Mixed ratio problems
£147.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £63.00 -
5. Statistics Mean
Calculate the mean of: 16, 41, 41, 19, 29, 34
Answer: 30