Keystones — Lintel
Five GCSE retrieval questions · 6 October 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 960,000 in standard form
Answer: 9.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x - 77
Answer: (x + 7)(x - 11) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 42°. Find opposite. Give your answer to 2 decimal places
Answer: 11.71cm -
4. Ratio Mixed ratio problems
£261.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £145.00 -
5. Statistics Mean
Calculate the mean of: 41, 7, 15, 26, 28, 37, 11, 48. Give your answer to 2 decimal places
Answer: 26.63