Keystones — Lintel
Five GCSE retrieval questions · 2 December 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
790000
Answer: 7.9 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 47°. Find opposite
Answer: 20.4cm -
4. Ratio Mixed ratio problems
In ratio 1:4:4, what fraction is the second part?
Answer: 4⁄9 -
5. Statistics Mean
Calculate the mean of: 36, 16, 16, 27, 39, 47, 30, 39
Answer: 31.3