Keystones — Lintel
Five GCSE retrieval questions · 9 November 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
370000
Answer: 3.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x + 4
Answer: (x - 2)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 48°. Find opposite
Answer: 18.9cm -
4. Ratio Mixed ratio problems
Divide 150 in the ratio 3:1:2
Answer: 75, 25 and 50 -
5. Statistics Mean
Calculate the mean of: 44, 18, 32, 38, 39, 49, 33
Answer: 36.1