Keystones — Lintel
Five GCSE retrieval questions · 22 April 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.006
Answer: 6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 21
Answer: (x + 7)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 55°. Find adjacent side
Answer: 21.8cm -
4. Ratio Mixed ratio problems
Simplify: 18:15:6
Answer: 6:5:2 -
5. Statistics Mean
Calculate the mean of: 23, 48, 23, 48, 33, 46, 31, 44
Answer: 37