Keystones — Lintel
Five GCSE retrieval questions · 10 October 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 930,000,000 in standard form
Answer: 9.3 × 108 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 33°. Find adjacent side. Give your answer to 2 decimal places
Answer: 25.16cm -
4. Ratio Mixed ratio problems
£280.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £160.00 -
5. Statistics Mean
Calculate the mean of: 41, 47, 43, 16, 25, 14, 49. Give your answer to 2 decimal places
Answer: 33.57