Keystones — Lintel
Five GCSE retrieval questions · 26 August 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 26,000 in standard form
Answer: 2.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 63
Answer: (x + 9)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 27°. Find adjacent side. Give your answer to 2 decimal places
Answer: 22.28cm -
4. Ratio Mixed ratio problems
£175.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £125.00 -
5. Statistics Mean
Calculate the mean of: 40, 19, 34, 37, 50, 30, 42, 10
Answer: 32.75