Keystones — Lintel
Five GCSE retrieval questions · 23 June 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00081
Answer: 8.1 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 32
Answer: (x + 8)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 34°. Find adjacent side
Answer: 14.cm -
4. Ratio Mixed ratio problems
Simplify: 24:16:12
Answer: 6:4:3 -
5. Statistics Mean
Calculate the mean of: 28, 45, 19, 46, 35, 40, 18, 7
Answer: 29.8