Keystones — Lintel
Five GCSE retrieval questions · 10 November 2024 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.043
Answer: 4.3 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 37°. Find adjacent side
Answer: 18.4cm -
4. Ratio Mixed ratio problems
In ratio 4:4:2, what fraction is the second part?
Answer: 4⁄10 -
5. Statistics Mean
Calculate the mean of: 9, 45, 24, 35, 28, 15
Answer: 26