Keystones — Lintel
Five GCSE retrieval questions · 2 May 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0038
Answer: 3.8 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 15
Answer: (x - 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 52°. Find adjacent side
Answer: 24cm -
4. Ratio Mixed ratio problems
In ratio 4:1:1, what fraction is the second part?
Answer: 1⁄6 -
5. Statistics Mean
Calculate the mean of: 35, 47, 33, 5, 28, 41, 46, 45
Answer: 35