Keystones — Lintel
Five GCSE retrieval questions · 3 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
9400000
Answer: 9.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 21cm, angle = 55°. Find opposite
Answer: 30cm -
4. Ratio Mixed ratio problems
In ratio 2:1:3, what fraction is the second part?
Answer: 1⁄6 -
5. Statistics Mean
Calculate the mean of: 29, 30, 13, 47, 49, 5, 18
Answer: 27.3