Keystones — Lintel
Five GCSE retrieval questions · 6 May 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.063
Answer: 6.3 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 56°. Find adjacent side
Answer: 17.3cm -
4. Ratio Mixed ratio problems
In ratio 2:3:2, what fraction is the second part?
Answer: 3⁄7 -
5. Statistics Mean
Calculate the mean of: 10, 13, 48, 10, 8, 22, 43, 42
Answer: 24.5