Keystones — Lintel
Five GCSE retrieval questions · 23 February 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.00091 in standard form
Answer: 9.1 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 32
Answer: (x + 8)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 29cm, angle = 60°. Find adjacent side
Answer: 14.5cm -
4. Ratio Mixed ratio problems
£324.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £144.00 -
5. Statistics Mean
Calculate the mean of: 7, 24, 44, 29, 32, 46. Give your answer to 2 decimal places
Answer: 30.33