Keystones — Lintel
Five GCSE retrieval questions · 2 December 2010 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.063 in standard form
Answer: 6.3 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 14x + 40
Answer: (x - 4)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 39°. Find adjacent side. Give your answer to 2 decimal places
Answer: 25.65cm -
4. Ratio Mixed ratio problems
£301.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £215.00 -
5. Statistics Mean
Calculate the mean of: 50, 21, 38, 7, 14, 37, 11, 14
Answer: 24