Keystones — Lintel
Five GCSE retrieval questions · 21 June 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 44,000 in standard form
Answer: 4.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 12
Answer: (x + 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 37°. Find adjacent side. Give your answer to 2 decimal places
Answer: 21.56cm -
4. Ratio Mixed ratio problems
£168.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £120.00 -
5. Statistics Mean
The mean of 5 numbers is 28. If 4 of them are 16, 16, 37, 44, what is the missing number?
Answer: 27