Keystones — Lintel
Five GCSE retrieval questions · 2 February 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
120000
Answer: 1.2 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 40°. Find adjacent side
Answer: 21.4cm -
4. Ratio Mixed ratio problems
£343.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £196.00 -
5. Statistics Mean
Calculate the mean of: 41, 7, 19, 5, 29, 24, 42, 13
Answer: 22.5