Keystones — Lintel
Five GCSE retrieval questions · 30 May 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.025 in standard form
Answer: 2.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 32°. Find adjacent side. Give your answer to 2 decimal places
Answer: 33.92cm -
4. Ratio Mixed ratio problems
£231.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £99.00 -
5. Statistics Mean
Calculate the mean of: 13, 48, 46, 37, 47, 24, 26, 38. Give your answer to 2 decimal places
Answer: 34.88