Keystones — Lintel
Five GCSE retrieval questions · 2 November 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.047
Answer: 4.7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 16
Answer: (x + 8)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 36°. Find opposite
Answer: 8cm -
4. Ratio Mixed ratio problems
In ratio 4:2:2, what fraction is the second part?
Answer: 2⁄8 -
5. Statistics Mean
Calculate the mean of: 30, 19, 42, 9, 36, 39
Answer: 29.2