Keystones — Lintel
Five GCSE retrieval questions · 5 August 2010 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 460,000 in standard form
Answer: 4.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 9x + 8
Answer: (x + 8)(x + 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 29cm, angle = 26°. Find adjacent side. Give your answer to 2 decimal places
Answer: 26.07cm -
4. Ratio Mixed ratio problems
Divide 175 in the ratio 2:1:4
Answer: 50, 25 and 100 -
5. Statistics Mean
Calculate the mean of: 31, 21, 48, 23, 23, 27, 40, 47
Answer: 32.5