Keystones — Lintel
Five GCSE retrieval questions · 31 August 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
7800000
Answer: 7.8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 21cm, angle = 61°. Find adjacent side
Answer: 10.2cm -
4. Ratio Mixed ratio problems
Divide 133 in the ratio 3:1:3
Answer: 57, 19 and 57 -
5. Statistics Mean
Calculate the mean of: 11, 21, 7, 27, 41, 6, 42, 22
Answer: 22.1