Keystones — Lintel
Five GCSE retrieval questions · 23 November 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
18000
Answer: 1.8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 25
Answer: (x - 5)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 37°. Find adjacent side
Answer: 31.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 48, 16, 49, 27, 9, 43, 50
Answer: 34.6