Keystones — Lintel
Five GCSE retrieval questions · 28 July 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 6,100,000 in standard form
Answer: 6.1 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 36
Answer: (x + 9)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 52°. Find adjacent side. Give your answer to 2 decimal places
Answer: 18.47cm -
4. Ratio Mixed ratio problems
Simplify: 4:6:12
Answer: 2:3:6 -
5. Statistics Mean
Calculate the mean of: 37, 26, 36, 45, 15, 19, 39, 9
Answer: 28.25