Keystones — Lintel
Five GCSE retrieval questions · 4 November 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 89,000,000 in standard form
Answer: 8.9 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 4)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places
Answer: 29.93cm -
4. Ratio Mixed ratio problems
£336.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £240.00 -
5. Statistics Mean
Calculate the mean of: 45, 43, 33, 40, 18, 6. Give your answer to 2 decimal places
Answer: 30.83