Keystones — Lintel
Five GCSE retrieval questions · 14 November 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 74,000 in standard form
Answer: 7.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 22x + 121
Answer: (x + 11)(x + 11) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 29cm, angle = 54°. Find adjacent side. Give your answer to 2 decimal places
Answer: 17.05cm -
4. Ratio Mixed ratio problems
Divide 96 in the ratio 3:4:1
Answer: 36, 48 and 12 -
5. Statistics Mean
Calculate the mean of: 15, 6, 26, 29, 18, 15, 7. Give your answer to 2 decimal places
Answer: 16.57