Keystones — Lintel
Five GCSE retrieval questions · 24 April 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.069
Answer: 6.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 20cm, angle = 51°. Find adjacent side
Answer: 12.6cm -
4. Ratio Mixed ratio problems
Simplify: 8:10:8
Answer: 4:5:4 -
5. Statistics Mean
Calculate the mean of: 8, 24, 22, 29, 39, 34, 34
Answer: 27.1