Keystones — Lintel
Five GCSE retrieval questions · 24 June 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000062 in standard form
Answer: 6.2 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 35
Answer: (x + 7)(x - 5) -
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
£296.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £185.00 -
5. Statistics Mean
Calculate the mean of: 16, 38, 38, 14, 50, 5. Give your answer to 2 decimal places
Answer: 26.83