Keystones — Lintel
Five GCSE retrieval questions · 26 May 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 950,000 in standard form
Answer: 9.5 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 56
Answer: (x + 7)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 31°. Find opposite. Give your answer to 2 decimal places
Answer: 9.01cm -
4. Ratio Mixed ratio problems
£208.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £130.00 -
5. Statistics Mean
Calculate the mean of: 39, 17, 40, 19, 31, 21. Give your answer to 2 decimal places
Answer: 27.83