Keystones — Lintel
Five GCSE retrieval questions · 11 November 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 890,000 in standard form
Answer: 8.9 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 33°. Find adjacent side. Give your answer to 2 decimal places
Answer: 20.97cm -
4. Ratio Mixed ratio problems
£196.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £112.00 -
5. Statistics Mean
Calculate the mean of: 26, 38, 15, 33, 26, 24, 11. Give your answer to 2 decimal places
Answer: 24.71