Keystones — Lintel
Five GCSE retrieval questions · 3 July 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 210,000 in standard form
Answer: 2.1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x - 16
Answer: (x + 2)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 47°. Find opposite. Give your answer to 2 decimal places
Answer: 10.72cm -
4. Ratio Mixed ratio problems
£360.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £200.00 -
5. Statistics Mean
Calculate the mean of: 14, 9, 42, 33, 49, 28, 11, 11. Give your answer to 2 decimal places
Answer: 24.63