Keystones — Lintel
Five GCSE retrieval questions · 7 July 2014 · 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 + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 41°. Find opposite. Give your answer to 2 decimal places
Answer: 19.99cm -
4. Ratio Mixed ratio problems
£217.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £155.00 -
5. Statistics Mean
Calculate the mean of: 10, 16, 8, 27, 14, 48
Answer: 20.5