Keystones — Lintel
Five GCSE retrieval questions · 29 August 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
2600000
Answer: 2.6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 15
Answer: (x - 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 25°. Find adjacent side
Answer: 16.3cm -
4. Ratio Mixed ratio problems
Divide 270 in the ratio 2:4:3
Answer: 60, 120 and 90 -
5. Statistics Mean
Calculate the mean of: 50, 50, 8, 16, 28, 28
Answer: 30