Keystones — Lintel
Five GCSE retrieval questions · 28 September 2010 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.00092 in standard form
Answer: 9.2 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 50°. Find adjacent side. Give your answer to 2 decimal places
Answer: 21.21cm -
4. Ratio Mixed ratio problems
£130.00 is shared between A and B in the ratio 2:3. How much does A receive?
Answer: £52.00 -
5. Statistics Mean
Calculate the mean of: 22, 29, 42, 35, 18, 13
Answer: 26.5