Keystones — Lintel
Five GCSE retrieval questions · 10 September 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
160000
Answer: 1.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 53°. Find opposite
Answer: 35.8cm -
4. Ratio Mixed ratio problems
In ratio 4:2:4, what fraction is the second part?
Answer: 2⁄10 -
5. Statistics Mean
Calculate the mean of: 31, 42, 44, 40, 31, 17, 7
Answer: 30.3