Keystones — Lintel
Five GCSE retrieval questions · 18 March 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00095
Answer: 9.5 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 24
Answer: (x + 8)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 34°. Find opposite
Answer: 12.cm -
4. Ratio Mixed ratio problems
£154.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £44.00 -
5. Statistics Mean
Calculate the mean of: 42, 30, 40, 16, 43, 19, 14
Answer: 29.1