Keystones — Lintel
Five GCSE retrieval questions · 18 November 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
3500000
Answer: 3.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 10
Answer: (x + 5)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 41°. Find opposite
Answer: 15.6cm -
4. Ratio Mixed ratio problems
In ratio 3:2:4, what fraction is the second part?
Answer: 2⁄9 -
5. Statistics Mean
Calculate the mean of: 29, 29, 28, 35, 27, 25
Answer: 28.8