Keystones — Lintel
Five GCSE retrieval questions · 2 March 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
22000000
Answer: 2.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 10
Answer: (x - 5)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 32°. Find opposite
Answer: 8.7cm -
4. Ratio Mixed ratio problems
In ratio 3:1:1, what fraction is the second part?
Answer: 1⁄5 -
5. Statistics Mean
Calculate the mean of: 46, 18, 27, 16, 43, 29, 34, 34
Answer: 30.9