Keystones — Lintel
Five GCSE retrieval questions · 15 May 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
400000
Answer: 4 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 37°. Find adjacent side
Answer: 22.4cm -
4. Ratio Mixed ratio problems
£224.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £160.00 -
5. Statistics Mean
Calculate the mean of: 21, 29, 18, 50, 26, 28, 24
Answer: 28