Keystones — Lintel
Five GCSE retrieval questions · 17 December 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
730000
Answer: 7.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 60°. Find adjacent side
Answer: 9cm -
4. Ratio Mixed ratio problems
Divide 168 in the ratio 1:4:2
Answer: 24, 96 and 48 -
5. Statistics Mean
Calculate the mean of: 13, 41, 34, 33, 35, 33
Answer: 31.5