Keystones — Lintel
Five GCSE retrieval questions · 1 January 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0005
Answer: 5 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 49°. Find adjacent side
Answer: 22.3cm -
4. Ratio Mixed ratio problems
Simplify: 8:6:12
Answer: 4:3:6 -
5. Statistics Mean
Calculate the mean of: 29, 18, 37, 42, 34, 22, 46, 11
Answer: 29.9