Keystones — Lintel
Five GCSE retrieval questions · 12 March 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 330,000 in standard form
Answer: 3.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 63
Answer: (x + 7)(x - 9) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places
Answer: 8.45cm -
4. Ratio Mixed ratio problems
£147.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £63.00 -
5. Statistics Mean
Calculate the mean of: 29, 10, 7, 38, 25, 35
Answer: 24