Keystones — Lintel
Five GCSE retrieval questions · 29 November 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
68000000
Answer: 6.8 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x + 4
Answer: (x - 2)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 41°. Find opposite
Answer: 24.3cm -
4. Ratio Mixed ratio problems
In ratio 3:1:3, what fraction is the second part?
Answer: 1⁄7 -
5. Statistics Mean
Calculate the mean of: 18, 26, 46, 7, 42, 12, 22
Answer: 24.7