Keystones — Lintel
Five GCSE retrieval questions · 10 August 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0094
Answer: 9.4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 30°. Find adjacent side
Answer: 22.5cm -
4. Ratio Mixed ratio problems
In ratio 3:4:3, what fraction is the second part?
Answer: 4⁄10 -
5. Statistics Mean
Calculate the mean of: 20, 16, 12, 22, 47, 24, 14
Answer: 22.1