Keystones — Lintel
Five GCSE retrieval questions · 1 February 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.022 in standard form
Answer: 2.2 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x - 6
Answer: (x + 1)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places
Answer: 15.37cm -
4. Ratio Mixed ratio problems
Simplify the ratio £6 : 5p
Answer: 120:1 -
5. Statistics Mean
Calculate the mean of: 44, 46, 37, 26, 43, 40, 39, 49
Answer: 40.5