Keystones — Lintel
Five GCSE retrieval questions · 27 May 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
50000
Answer: 5 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 8
Answer: (x + 8)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 57°. Find opposite
Answer: 16.9cm -
4. Ratio Mixed ratio problems
In ratio 1:3:3, what fraction is the second part?
Answer: 3⁄7 -
5. Statistics Mean
Calculate the mean of: 38, 48, 44, 45, 27, 43, 7
Answer: 36