Keystones — Lintel
Five GCSE retrieval questions · 2 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.065
Answer: 6.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 16
Answer: (x + 8)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 60°. Find opposite
Answer: 41.6cm -
4. Ratio Mixed ratio problems
In ratio 4:1:2, what fraction is the second part?
Answer: 1⁄7 -
5. Statistics Mean
Calculate the mean of: 50, 5, 20, 47, 37, 42, 29, 15
Answer: 30.6