Keystones — Lintel
Five GCSE retrieval questions · 26 August 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.049 in standard form
Answer: 4.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 16x + 64
Answer: (x - 8)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 64°. Find adjacent side. Give your answer to 2 decimal places
Answer: 7.01cm -
4. Ratio Mixed ratio problems
£259.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £74.00 -
5. Statistics Mean
Calculate the mean of: 5, 50, 19, 18, 24, 12, 18. Give your answer to 2 decimal places
Answer: 20.86