Keystones — Lintel
Five GCSE retrieval questions · 28 November 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 470,000 in standard form
Answer: 4.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x - 60
Answer: (x + 6)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 34°. Find opposite. Give your answer to 2 decimal places
Answer: 18.21cm -
4. Ratio Mixed ratio problems
£252.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £84.00 -
5. Statistics Mean
The mean of 6 numbers is 31. If 5 of them are 17, 26, 47, 35, 17, what is the missing number?
Answer: 44