Keystones — Lintel
Five GCSE retrieval questions · 3 September 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0058
Answer: 5.8 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 5
Answer: (x + 5)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 63°. Find adjacent side
Answer: 13.6cm -
4. Ratio Mixed ratio problems
Simplify: 12:9:6
Answer: 4:3:2 -
5. Statistics Mean
Calculate the mean of: 34, 33, 36, 18, 25, 24, 19, 26
Answer: 26.9