Keystones — Lintel
Five GCSE retrieval questions · 14 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.017
Answer: 1.7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 40°. Find adjacent side
Answer: 12.3cm -
4. Ratio Mixed ratio problems
£160.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £96.00 -
5. Statistics Mean
Calculate the mean of: 36, 46, 40, 27, 41, 14, 11, 21
Answer: 29.5