Keystones — Lintel
Five GCSE retrieval questions · 30 August 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.00059 in standard form
Answer: 5.9 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x - 7
Answer: (x + 1)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 56°. Find opposite. Give your answer to 2 decimal places
Answer: 34.cm -
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: 40, 20, 44, 20, 17, 44, 23. Give your answer to 2 decimal places
Answer: 29.71