Keystones — Lintel
Five GCSE retrieval questions · 22 October 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
300000
Answer: 3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 21
Answer: (x - 3)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 54°. Find adjacent side
Answer: 15.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 38, 25, 32, 30, 18, 16, 34, 19
Answer: 26.5