Keystones — Lintel
Five GCSE retrieval questions · 5 August 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
170000
Answer: 1.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 59°. Find adjacent side
Answer: 16cm -
4. Ratio Mixed ratio problems
In ratio 3:4:2, what fraction is the second part?
Answer: 4⁄9 -
5. Statistics Mean
Calculate the mean of: 21, 29, 13, 45, 32, 8, 8
Answer: 22.3