Keystones — Lintel
Five GCSE retrieval questions · 21 July 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0094
Answer: 9.4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 39°. Find adjacent side
Answer: 17.9cm -
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: 38, 25, 41, 30, 38, 46, 32
Answer: 35.7