Keystones — Lintel
Five GCSE retrieval questions · 29 December 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00011
Answer: 1.1 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 49°. Find adjacent side
Answer: 17.cm -
4. Ratio Mixed ratio problems
Simplify: 12:16:8
Answer: 3:4:2 -
5. Statistics Mean
Calculate the mean of: 45, 47, 30, 10, 22, 15, 14, 27
Answer: 26.3