Keystones — Lintel
Five GCSE retrieval questions · 28 January 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.098
Answer: 9.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 14x + 49
Answer: (x - 7)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 42°. Find opposite
Answer: 20.7cm -
4. Ratio Mixed ratio problems
In ratio 4:4:3, what fraction is the second part?
Answer: 4⁄11 -
5. Statistics Mean
Calculate the mean of: 49, 37, 23, 40, 44, 12
Answer: 34.2