Keystones — Lintel
Five GCSE retrieval questions · 4 August 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 960,000 in standard form
Answer: 9.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x - 32
Answer: (x + 4)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 37°. Find adjacent side. Give your answer to 2 decimal places
Answer: 28.75cm -
4. Ratio Mixed ratio problems
In ratio 1:6:3, what fraction is the third part?
Answer: 3⁄10 -
5. Statistics Mean
Calculate the mean of: 39, 23, 49, 35, 24, 5, 21
Answer: 28