Keystones — Lintel
Five GCSE retrieval questions · 12 January 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 37,000 in standard form
Answer: 3.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 20x + 96
Answer: (x + 12)(x + 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 49°. Find adjacent side. Give your answer to 2 decimal places
Answer: 9.84cm -
4. Ratio Mixed ratio problems
In ratio 12:5:12, what fraction is the third part?
Answer: 12⁄29 -
5. Statistics Mean
Calculate the mean of: 27, 31, 30, 32, 19, 17
Answer: 26