Keystones — Lintel
Five GCSE retrieval questions · 1 December 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0086 in standard form
Answer: 8.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 60
Answer: (x + 10)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 30°. Find opposite. Give your answer to 2 decimal places
Answer: 14.43cm -
4. Ratio Mixed ratio problems
£312.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £195.00 -
5. Statistics Mean
Calculate the mean of: 34, 44, 48, 35, 9, 44. Give your answer to 2 decimal places
Answer: 35.67