Keystones — Lintel
Five GCSE retrieval questions · 31 January 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 82,000,000 in standard form
Answer: 8.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 40
Answer: (x - 5)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 27°. Find adjacent side. Give your answer to 2 decimal places
Answer: 28.51cm -
4. Ratio Mixed ratio problems
£294.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £196.00 -
5. Statistics Mean
The mean of 4 numbers is 34. If 3 of them are 34, 30, 35, what is the missing number?
Answer: 37