Keystones — Lintel
Five GCSE retrieval questions · 29 May 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 93,000,000 in standard form
Answer: 9.3 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 12
Answer: (x + 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 44°. Find opposite. Give your answer to 2 decimal places
Answer: 27.04cm -
4. Ratio Mixed ratio problems
£243.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £108.00 -
5. Statistics Mean
Calculate the mean of: 27, 34, 49, 29, 14, 15
Answer: 28