Keystones — Lintel
Five GCSE retrieval questions · 17 June 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 91,000 in standard form
Answer: 9.1 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 110
Answer: (x + 10)(x - 11) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 59°. Find opposite. Give your answer to 2 decimal places
Answer: 31.62cm -
4. Ratio Mixed ratio problems
£441.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £196.00 -
5. Statistics Mean
Calculate the mean of: 9, 49, 41, 26, 20, 40. Give your answer to 2 decimal places
Answer: 30.83