Keystones — Lintel
Five GCSE retrieval questions · 20 December 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
64000000
Answer: 6.4 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 39°. Find opposite
Answer: 16.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 44, 39, 7, 34, 35, 40, 13, 41
Answer: 31.6