Keystones — Lintel
Five GCSE retrieval questions · 18 November 2010 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 6,300,000 in standard form
Answer: 6.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 56
Answer: (x + 8)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 44°. Find opposite. Give your answer to 2 decimal places
Answer: 25.11cm -
4. Ratio Mixed ratio problems
Divide 168 in the ratio 2:4:1
Answer: 48, 96 and 24 -
5. Statistics Mean
Calculate the mean of: 33, 41, 30, 24, 43, 32, 16. Give your answer to 2 decimal places
Answer: 31.29