Keystones — Lintel
Five GCSE retrieval questions · 15 June 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.003 in standard form
Answer: 3 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 70
Answer: (x + 10)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 58°. Find adjacent side. Give your answer to 2 decimal places
Answer: 19.61cm -
4. Ratio Mixed ratio problems
Orange and purple counters are in the ratio 2:12. What fraction of the counters are orange?
Answer: 1⁄7 -
5. Statistics Mean
Calculate the mean of: 40, 23, 25, 37, 37, 24, 40, 45. Give your answer to 2 decimal places
Answer: 33.88