Keystones — Lintel
Five GCSE retrieval questions · 25 November 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
52000000
Answer: 5.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 42°. Find adjacent side
Answer: 20.8cm -
4. Ratio Mixed ratio problems
£322.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £138.00 -
5. Statistics Mean
Calculate the mean of: 9, 12, 16, 43, 43, 24
Answer: 24.5