Keystones — Lintel
Five GCSE retrieval questions · 2 May 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 4,300,000 in standard form
Answer: 4.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 34°. Find adjacent side. Give your answer to 2 decimal places
Answer: 19.07cm -
4. Ratio Mixed ratio problems
Simplify: 12:6:9
Answer: 4:2:3 -
5. Statistics Mean
Calculate the mean of: 29, 29, 17, 48, 46, 29, 30, 32
Answer: 32.5