Keystones — Lintel
Five GCSE retrieval questions · 18 December 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0003
Answer: 3 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 49°. Find opposite
Answer: 11.5cm -
4. Ratio Mixed ratio problems
In ratio 3:1:4, what fraction is the second part?
Answer: 1⁄8 -
5. Statistics Mean
Calculate the mean of: 23, 36, 7, 50, 10, 10, 14, 12
Answer: 20.3