Keystones — Lintel
Five GCSE retrieval questions · 9 October 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 480,000 in standard form
Answer: 4.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 36
Answer: (x + 9)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 59°. Find opposite. Give your answer to 2 decimal places
Answer: 33.29cm -
4. Ratio Mixed ratio problems
£204.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £136.00 -
5. Statistics Mean
Calculate the mean of: 8, 35, 45, 28, 42, 32, 20
Answer: 30