Keystones — Lintel
Five GCSE retrieval questions · 10 June 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
21000000
Answer: 2.1 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 33°. Find opposite
Answer: 8.4cm -
4. Ratio Mixed ratio problems
In ratio 4:1:1, what fraction is the second part?
Answer: 1⁄6 -
5. Statistics Mean
Calculate the mean of: 22, 19, 32, 34, 25, 39, 5
Answer: 25.1