Keystones — Lintel
Five GCSE retrieval questions · 29 May 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 9,100,000 in standard form
Answer: 9.1 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 20x + 96
Answer: (x + 12)(x + 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 55°. Find opposite. Give your answer to 2 decimal places
Answer: 24.28cm -
4. Ratio Mixed ratio problems
£186.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £62.00 -
5. Statistics Mean
Calculate the mean of: 32, 38, 7, 31, 18, 14, 6. Give your answer to 2 decimal places
Answer: 20.86