Keystones — Lintel
Five GCSE retrieval questions · 25 September 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 92,000,000 in standard form
Answer: 9.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 14x + 24
Answer: (x - 2)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 59°. Find adjacent side. Give your answer to 2 decimal places
Answer: 14.42cm -
4. Ratio Mixed ratio problems
£288.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £180.00 -
5. Statistics Mean
The mean of 4 numbers is 38. If 3 of them are 45, 22, 22, what is the missing number?
Answer: 63