Keystones — Lintel
Five GCSE retrieval questions · 23 September 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
87000
Answer: 8.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 18
Answer: (x + 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 64°. Find adjacent side
Answer: 11.8cm -
4. Ratio Mixed ratio problems
Simplify: 4:10:6
Answer: 2:5:3 -
5. Statistics Mean
Calculate the mean of: 12, 10, 25, 13, 42, 40, 28, 42
Answer: 26.5