Keystones — Lintel
Five GCSE retrieval questions · 30 November 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.009
Answer: 9 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 4
Answer: (x + 4)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 39°. Find adjacent side
Answer: 21.8cm -
4. Ratio Mixed ratio problems
£225.00 is shared between A and B in the ratio 2:3. How much does A receive?
Answer: £90.00 -
5. Statistics Mean
Calculate the mean of: 13, 13, 36, 12, 12, 35, 38, 23
Answer: 22.8