Keystones — Lintel
Five GCSE retrieval questions · 23 February 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
43000
Answer: 4.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 25
Answer: (x - 5)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 37°. Find opposite
Answer: 22.6cm -
4. Ratio Mixed ratio problems
In ratio 4:3:4, what fraction is the second part?
Answer: 3⁄11 -
5. Statistics Mean
Calculate the mean of: 9, 33, 30, 43, 37, 31
Answer: 30.5