Keystones — Lintel
Five GCSE retrieval questions · 4 February 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.048
Answer: 4.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 39°. Find adjacent side
Answer: 14.8cm -
4. Ratio Mixed ratio problems
£168.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £48.00 -
5. Statistics Mean
Calculate the mean of: 14, 28, 23, 32, 40, 29, 46, 12
Answer: 28