Keystones — Lintel
Five GCSE retrieval questions · 22 April 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
370000
Answer: 3.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 29°. Find adjacent side
Answer: 24.5cm -
4. Ratio Mixed ratio problems
Simplify: 24:24:16
Answer: 3:3:2 -
5. Statistics Mean
Calculate the mean of: 27, 12, 28, 43, 21, 26
Answer: 26.2