Keystones — Lintel
Five GCSE retrieval questions · 1 October 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
780000
Answer: 7.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 24
Answer: (x - 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 40°. Find adjacent side
Answer: 20.7cm -
4. Ratio Mixed ratio problems
Simplify: 16:16:20
Answer: 4:4:5 -
5. Statistics Mean
Calculate the mean of: 37, 39, 32, 26, 19, 36, 12, 41
Answer: 30.3