Keystones — Lintel
Five GCSE retrieval questions · 7 June 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.045
Answer: 4.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 39°. Find opposite
Answer: 17.8cm -
4. Ratio Mixed ratio problems
In ratio 4:1:4, what fraction is the second part?
Answer: 1⁄9 -
5. Statistics Mean
Calculate the mean of: 12, 44, 19, 12, 9, 24
Answer: 20