Keystones — Lintel
Five GCSE retrieval questions · 13 June 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.049
Answer: 4.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 9
Answer: (x - 3)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 53°. Find adjacent side
Answer: 11.4cm -
4. Ratio Mixed ratio problems
In ratio 4:2:3, what fraction is the second part?
Answer: 2⁄9 -
5. Statistics Mean
Calculate the mean of: 37, 16, 43, 16, 50, 5, 15
Answer: 26