Keystones — Lintel
Five GCSE retrieval questions · 24 March 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
83000000
Answer: 8.3 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 46°. Find opposite
Answer: 30cm -
4. Ratio Mixed ratio problems
In ratio 2:3:1, what fraction is the second part?
Answer: 3⁄6 -
5. Statistics Mean
Calculate the mean of: 50, 42, 25, 20, 10, 39, 23, 11
Answer: 27.5