Keystones — Lintel
Five GCSE retrieval questions · 20 November 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
790000
Answer: 7.9 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 25
Answer: (x - 5)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 60°. Find opposite
Answer: 48.5cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 48, 26, 29, 37, 44, 35, 10, 27
Answer: 32