Keystones — Lintel
Five GCSE retrieval questions · 27 September 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
46000
Answer: 4.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 25°. Find adjacent side
Answer: 30.8cm -
4. Ratio Mixed ratio problems
Divide 250 in the ratio 4:3:3
Answer: 100, 75 and 75 -
5. Statistics Mean
Calculate the mean of: 36, 38, 36, 46, 32, 49
Answer: 39.5