Keystones — Lintel
Five GCSE retrieval questions · 17 November 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0035
Answer: 3.5 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 53°. Find opposite
Answer: 35.8cm -
4. Ratio Mixed ratio problems
In ratio 3:1:3, what fraction is the second part?
Answer: 1⁄7 -
5. Statistics Mean
Calculate the mean of: 34, 29, 44, 38, 29, 46, 48, 49
Answer: 39.6