Keystones — Lintel
Five GCSE retrieval questions · 15 May 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 900,000,000 in standard form
Answer: 9 × 108 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 60
Answer: (x + 10)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 31°. Find opposite. Give your answer to 2 decimal places
Answer: 14.42cm -
4. Ratio Mixed ratio problems
£266.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £190.00 -
5. Statistics Mean
Calculate the mean of: 7, 17, 23, 46, 42, 21, 41, 13
Answer: 26.25