Keystones — Lintel
Five GCSE retrieval questions · 13 December 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0068 in standard form
Answer: 6.8 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 18
Answer: (x + 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 37°. Find adjacent side. Give your answer to 2 decimal places
Answer: 20.76cm -
4. Ratio Mixed ratio problems
£304.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £190.00 -
5. Statistics Mean
Calculate the mean of: 16, 16, 20, 30, 33, 8, 50, 28. Give your answer to 2 decimal places
Answer: 25.13