Keystones — Lintel
Five GCSE retrieval questions · 22 June 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0019
Answer: 1.9 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 34°. Find adjacent side
Answer: 26.5cm -
4. Ratio Mixed ratio problems
£174.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £116.00 -
5. Statistics Mean
Calculate the mean of: 15, 45, 44, 8, 38, 45, 8, 47
Answer: 31.3