Keystones — Lintel
Five GCSE retrieval questions · 27 September 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
13000
Answer: 1.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 35°. Find opposite
Answer: 12.6cm -
4. Ratio Mixed ratio problems
In ratio 2:1:1, what fraction is the second part?
Answer: 1⁄4 -
5. Statistics Mean
Calculate the mean of: 24, 49, 16, 30, 10, 42, 23, 38
Answer: 29