Keystones — Lintel
Five GCSE retrieval questions · 21 May 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
1300000
Answer: 1.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 2)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 41°. Find opposite
Answer: 23.5cm -
4. Ratio Mixed ratio problems
In ratio 2:4:4, what fraction is the second part?
Answer: 4⁄10 -
5. Statistics Mean
Calculate the mean of: 49, 23, 43, 29, 49, 17
Answer: 35