Keystones — Lintel
Five GCSE retrieval questions · 6 April 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.004
Answer: 4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 59°. Find opposite
Answer: 21.6cm -
4. Ratio Mixed ratio problems
In ratio 4:2:4, what fraction is the second part?
Answer: 2⁄10 -
5. Statistics Mean
Calculate the mean of: 11, 15, 46, 49, 46, 8, 38
Answer: 30.4