Keystones — Lintel
Five GCSE retrieval questions · 17 October 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.005 in standard form
Answer: 5 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x + 6
Answer: (x + 3)(x + 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 46°. Find opposite. Give your answer to 2 decimal places
Answer: 14.5cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4kg : 200g
Answer: 20:1 -
5. Statistics Mean
Calculate the mean of: 29, 32, 23, 15, 9, 49, 34, 41
Answer: 29