Keystones — Lintel
Five GCSE retrieval questions · 12 September 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 140,000 in standard form
Answer: 1.4 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x - 36
Answer: (x + 4)(x - 9) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 24cm, angle = 55°. Find adjacent side. Give your answer to 2 decimal places
Answer: 13.77cm -
4. Ratio Mixed ratio problems
£308.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £88.00 -
5. Statistics Mean
The mean of 4 numbers is 38. If 3 of them are 34, 37, 18, what is the missing number?
Answer: 63