Keystones — Lintel
Five GCSE retrieval questions · 3 June 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0085
Answer: 8.5 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 53°. Find opposite
Answer: 29.2cm -
4. Ratio Mixed ratio problems
In ratio 3:4:1, what fraction is the second part?
Answer: 4⁄8 -
5. Statistics Mean
Calculate the mean of: 19, 27, 31, 44, 18, 47, 6
Answer: 27.4