Keystones — Lintel
Five GCSE retrieval questions · 30 August 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 20,000 in standard form
Answer: 2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 23x + 132
Answer: (x - 11)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 52°. Find opposite. Give your answer to 2 decimal places
Answer: 25.6cm -
4. Ratio Mixed ratio problems
£250.00 is shared between A and B in the ratio 2:3. How much does A receive?
Answer: £100.00 -
5. Statistics Mean
Calculate the mean of: 47, 45, 17, 19, 37, 14, 12, 40. Give your answer to 2 decimal places
Answer: 28.88