Keystones — Lintel
Five GCSE retrieval questions · 2 September 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 90,000,000 in standard form
Answer: 9 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x + 5
Answer: (x + 5)(x + 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 48°. Find opposite. Give your answer to 2 decimal places
Answer: 28.88cm -
4. Ratio Mixed ratio problems
£234.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £104.00 -
5. Statistics Mean
Calculate the mean of: 8, 38, 42, 18, 32, 48
Answer: 31