Keystones — Lintel
Five GCSE retrieval questions · 24 May 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.044
Answer: 4.4 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 39°. Find adjacent side
Answer: 31.cm -
4. Ratio Mixed ratio problems
In ratio 2:3:1, what fraction is the second part?
Answer: 3⁄6 -
5. Statistics Mean
Calculate the mean of: 18, 44, 5, 6, 43, 47, 43
Answer: 29.4