Keystones — Lintel
Five GCSE retrieval questions · 24 July 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.083
Answer: 8.3 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 25
Answer: (x - 5)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 47°. Find opposite
Answer: 15cm -
4. Ratio Mixed ratio problems
In ratio 2:3:4, what fraction is the second part?
Answer: 3⁄9 -
5. Statistics Mean
Calculate the mean of: 44, 43, 37, 39, 24, 15, 46
Answer: 35.4