Keystones — Lintel
Five GCSE retrieval questions · 28 August 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.063
Answer: 6.3 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 41°. Find adjacent side
Answer: 21.cm -
4. Ratio Mixed ratio problems
£135.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £81.00 -
5. Statistics Mean
Calculate the mean of: 20, 31, 20, 38, 23, 23, 32
Answer: 26.7