Keystones — Lintel
Five GCSE retrieval questions · 7 May 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 - 2x - 24
Answer: (x + 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 34°. Find adjacent side. Give your answer to 2 decimal places
Answer: 29.85cm -
4. Ratio Mixed ratio problems
£272.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £170.00 -
5. Statistics Mean
Calculate the mean of: 36, 50, 48, 31, 36, 46. Give your answer to 2 decimal places
Answer: 41.17