Keystones — Lintel
Five GCSE retrieval questions · 29 November 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0063
Answer: 6.3 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 57°. Find adjacent side
Answer: 18.5cm -
4. Ratio Mixed ratio problems
Simplify: 15:12:9
Answer: 5:4:3 -
5. Statistics Mean
Calculate the mean of: 49, 15, 9, 6, 5, 34
Answer: 19.7