Keystones — Lintel
Five GCSE retrieval questions · 13 April 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0079
Answer: 7.9 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 4
Answer: (x + 4)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 51°. Find opposite
Answer: 12.3cm -
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: 26, 14, 50, 43, 19, 24
Answer: 29.3