Keystones — Lintel
Five GCSE retrieval questions · 18 February 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0045
Answer: 4.5 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 46°. Find adjacent side
Answer: 10.4cm -
4. Ratio Mixed ratio problems
£154.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £88.00 -
5. Statistics Mean
Calculate the mean of: 19, 29, 31, 19, 42, 33, 13, 32
Answer: 27.3