Keystones — Lintel
Five GCSE retrieval questions · 15 September 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0078
Answer: 7.8 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 6
Answer: (x + 6)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 27°. Find adjacent side
Answer: 20.5cm -
4. Ratio Mixed ratio problems
£200.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £120.00 -
5. Statistics Mean
Calculate the mean of: 49, 37, 32, 44, 7, 11
Answer: 30