Keystones — Lintel
Five GCSE retrieval questions · 29 December 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0095
Answer: 9.5 × 10^-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 30°. Find opposite
Answer: 7.5cm -
4. Ratio Mixed ratio problems
In ratio 4:4:3, what fraction is the second part?
Answer: 4⁄11 -
5. Statistics Mean
Calculate the mean of: 24, 38, 22, 8, 11, 34
Answer: 22.8