Keystones — Lintel
Five GCSE retrieval questions · 20 November 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
2000000
Answer: 2 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 25°. Find adjacent side
Answer: 22.7cm -
4. Ratio Mixed ratio problems
Simplify: 12:24:16
Answer: 3:6:4 -
5. Statistics Mean
Calculate the mean of: 36, 9, 49, 34, 20, 32, 39, 13
Answer: 29