Keystones — Lintel
Five GCSE retrieval questions · 3 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00086
Answer: 8.6 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 22cm, angle = 61°. Find adjacent side
Answer: 10.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 21, 22, 18, 12, 8, 43
Answer: 20.7