Keystones — Lintel
Five GCSE retrieval questions · 31 August 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 3,300,000 in standard form
Answer: 3.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x - 12
Answer: (x + 1)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 39°. Find adjacent side. Give your answer to 2 decimal places
Answer: 31.09cm -
4. Ratio Mixed ratio problems
£224.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £64.00 -
5. Statistics Mean
The mean of 6 numbers is 35. If 5 of them are 26, 18, 46, 23, 48, what is the missing number?
Answer: 49