Keystones — Lintel
Five GCSE retrieval questions · 19 May 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 770,000 in standard form
Answer: 7.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 70
Answer: (x + 10)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 52°. Find adjacent side. Give your answer to 2 decimal places
Answer: 19.09cm -
4. Ratio Mixed ratio problems
In ratio 12:8:6, what fraction is the first part?
Answer: 6⁄13 -
5. Statistics Mean
Calculate the mean of: 12, 50, 12, 7, 44, 33. Give your answer to 2 decimal places
Answer: 26.33