Keystones — Lintel
Five GCSE retrieval questions · 29 October 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
2500000
Answer: 2.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 2)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 42°. Find adjacent side
Answer: 14.cm -
4. Ratio Mixed ratio problems
£120.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £72.00 -
5. Statistics Mean
Calculate the mean of: 43, 40, 34, 24, 35, 5
Answer: 30.2