Keystones — Lintel
Five GCSE retrieval questions · 8 August 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 810,000 in standard form
Answer: 8.1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 3x - 40
Answer: (x + 5)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 41°. Find opposite. Give your answer to 2 decimal places
Answer: 16.52cm -
4. Ratio Mixed ratio problems
£273.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £156.00 -
5. Statistics Mean
Calculate the mean of: 10, 6, 37, 46, 48, 22. Give your answer to 2 decimal places
Answer: 28.17