Keystones — Lintel
Five GCSE retrieval questions · 30 November 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 790,000 in standard form
Answer: 7.9 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 27
Answer: (x + 9)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 34°. Find opposite. Give your answer to 2 decimal places
Answer: 16.19cm -
4. Ratio Mixed ratio problems
£282.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £188.00 -
5. Statistics Mean
Calculate the mean of: 45, 42, 9, 42, 31, 15, 42. Give your answer to 2 decimal places
Answer: 32.29