Keystones — Lintel
Five GCSE retrieval questions · 16 January 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
8900000
Answer: 8.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 9
Answer: (x - 3)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 36°. Find adjacent side
Answer: 12.cm -
4. Ratio Mixed ratio problems
Simplify: 16:12:20
Answer: 4:3:5 -
5. Statistics Mean
Calculate the mean of: 35, 38, 15, 48, 7, 31, 26
Answer: 28.6