Keystones — Lintel
Five GCSE retrieval questions · 5 June 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0011 in standard form
Answer: 1.1 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x + 1
Answer: (x - 1)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 22cm, angle = 39°. Find adjacent side. Give your answer to 2 decimal places
Answer: 17.cm -
4. Ratio Mixed ratio problems
Simplify the ratio 5 hours : 55 minutes
Answer: 60:11 -
5. Statistics Mean
Calculate the mean of: 40, 39, 25, 18, 36, 50. Give your answer to 2 decimal places
Answer: 34.67