Keystones — Lintel
Five GCSE retrieval questions · 29 September 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
23000
Answer: 2.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 45°. Find adjacent side
Answer: 23.3cm -
4. Ratio Mixed ratio problems
In ratio 1:4:2, what fraction is the second part?
Answer: 4⁄7 -
5. Statistics Mean
Calculate the mean of: 13, 30, 48, 16, 38, 45, 25
Answer: 30.7