Keystones — Lintel
Five GCSE retrieval questions · 14 November 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.085
Answer: 8.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 14
Answer: (x + 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 41°. Find adjacent side
Answer: 14.3cm -
4. Ratio Mixed ratio problems
£215.00 is shared between A and B in the ratio 2:3. How much does A receive?
Answer: £86.00 -
5. Statistics Mean
Calculate the mean of: 31, 29, 15, 24, 44, 22, 18, 39
Answer: 27.8