Keystones — Lintel
Five GCSE retrieval questions · 17 October 2010 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 360,000 in standard form
Answer: 3.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 56
Answer: (x + 7)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 54°. Find opposite. Give your answer to 2 decimal places
Answer: 34.41cm -
4. Ratio Mixed ratio problems
In ratio 8:11:7, what fraction is the first part?
Answer: 4⁄13 -
5. Statistics Mean
Calculate the mean of: 18, 13, 37, 48, 11, 6. Give your answer to 2 decimal places
Answer: 22.17