Keystones — Lintel
Five GCSE retrieval questions · 10 April 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00014
Answer: 1.4 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 39°. Find adjacent side
Answer: 21.8cm -
4. Ratio Mixed ratio problems
£252.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £180.00 -
5. Statistics Mean
Calculate the mean of: 41, 22, 45, 19, 12, 28, 37
Answer: 29.1