Keystones — Lintel
Five GCSE retrieval questions · 21 January 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
6900000
Answer: 6.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 32°. Find adjacent side
Answer: 27.cm -
4. Ratio Mixed ratio problems
Divide 126 in the ratio 2:2:3
Answer: 36, 36 and 54 -
5. Statistics Mean
Calculate the mean of: 6, 8, 19, 33, 49, 41, 21
Answer: 25.3