Keystones — Lintel
Five GCSE retrieval questions · 22 August 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 37,000,000 in standard form
Answer: 3.7 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 16x + 48
Answer: (x - 4)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places
Answer: 29.12cm -
4. Ratio Mixed ratio problems
£217.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £124.00 -
5. Statistics Mean
Calculate the mean of: 17, 21, 17, 20, 41, 45. Give your answer to 2 decimal places
Answer: 26.83