Keystones — Lintel
Five GCSE retrieval questions · 20 April 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.00053 in standard form
Answer: 5.3 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 5
Answer: (x + 5)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 20cm, angle = 56°. Find adjacent side. Give your answer to 2 decimal places
Answer: 11.18cm -
4. Ratio Mixed ratio problems
£234.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £156.00 -
5. Statistics Mean
Calculate the mean of: 44, 19, 14, 45, 19, 12
Answer: 25.5