Keystones — Lintel
Five GCSE retrieval questions · 1 August 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00021
Answer: 2.1 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 6
Answer: (x + 6)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 29°. Find adjacent side
Answer: 14.9cm -
4. Ratio Mixed ratio problems
£240.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £90.00 -
5. Statistics Mean
Calculate the mean of: 7, 28, 38, 40, 15, 40
Answer: 28