Keystones — Lintel
Five GCSE retrieval questions · 26 November 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.063 in standard form
Answer: 6.3 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x - 6
Answer: (x + 1)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 44°. Find adjacent side. Give your answer to 2 decimal places
Answer: 17.98cm -
4. Ratio Mixed ratio problems
In ratio 2:12:11, what fraction is the third part?
Answer: 11⁄25 -
5. Statistics Mean
Calculate the mean of: 10, 48, 9, 45, 36, 8
Answer: 26