Keystones — Lintel
Five GCSE retrieval questions · 13 November 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 33,000 in standard form
Answer: 3.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 5)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 49°. Find opposite. Give your answer to 2 decimal places
Answer: 29.91cm -
4. Ratio Mixed ratio problems
Divide 240 in the ratio 4:3:1
Answer: 120, 90 and 30 -
5. Statistics Mean
Calculate the mean of: 38, 6, 22, 35, 16, 36, 39, 38
Answer: 28.75