Keystones — Lintel
Five GCSE retrieval questions · 4 May 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 7,700,000 in standard form
Answer: 7.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x - 44
Answer: (x + 4)(x - 11) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 36°. Find opposite. Give your answer to 2 decimal places
Answer: 11.62cm -
4. Ratio Mixed ratio problems
£328.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £205.00 -
5. Statistics Mean
Calculate the mean of: 20, 16, 26, 34, 22, 25, 35. Give your answer to 2 decimal places
Answer: 25.43