Keystones — Lintel
Five GCSE retrieval questions · 28 September 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
2600000
Answer: 2.6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 24
Answer: (x + 6)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 34°. Find opposite
Answer: 13.5cm -
4. Ratio Mixed ratio problems
In ratio 1:2:2, what fraction is the second part?
Answer: 2⁄5 -
5. Statistics Mean
Calculate the mean of: 47, 12, 43, 41, 20, 25, 45
Answer: 33.3