Keystones — Lintel
Five GCSE retrieval questions · 23 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00055
Answer: 5.5 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 21
Answer: (x - 3)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 58°. Find adjacent side
Answer: 9.5cm -
4. Ratio Mixed ratio problems
£161.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £69.00 -
5. Statistics Mean
Calculate the mean of: 16, 26, 21, 14, 44, 5, 17, 48
Answer: 23.9