Keystones — Lintel
Five GCSE retrieval questions · 2 March 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 3,800,000 in standard form
Answer: 3.8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 3x - 4
Answer: (x + 1)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 48°. Find adjacent side. Give your answer to 2 decimal places
Answer: 23.42cm -
4. Ratio Mixed ratio problems
£204.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £136.00 -
5. Statistics Mean
The mean of 6 numbers is 36. If 5 of them are 47, 24, 22, 46, 36, what is the missing number?
Answer: 41