Keystones — Lintel
Five GCSE retrieval questions · 19 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0076
Answer: 7.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 6
Answer: (x + 6)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 50°. Find opposite
Answer: 21.5cm -
4. Ratio Mixed ratio problems
In ratio 3:3:1, what fraction is the second part?
Answer: 3⁄7 -
5. Statistics Mean
Calculate the mean of: 49, 11, 45, 39, 18, 26
Answer: 31.3