Keystones — Lintel
Five GCSE retrieval questions · 20 September 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 12,000 in standard form
Answer: 1.2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 18
Answer: (x + 9)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 44°. Find opposite. Give your answer to 2 decimal places
Answer: 14.49cm -
4. Ratio Mixed ratio problems
£145.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £87.00 -
5. Statistics Mean
Calculate the mean of: 46, 46, 5, 26, 17, 7, 27. Give your answer to 2 decimal places
Answer: 24.86