Keystones — Lintel
Five GCSE retrieval questions · 26 February 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
50000
Answer: 5 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 21cm, angle = 41°. Find adjacent side
Answer: 15.8cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 21, 42, 26, 14, 42, 39, 12
Answer: 28