Keystones — Lintel
Five GCSE retrieval questions · 11 February 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
4100000
Answer: 4.1 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 4)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 58°. Find adjacent side
Answer: 9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 31, 39, 41, 16, 11, 5, 40
Answer: 26.1