Keystones — Lintel
Five GCSE retrieval questions · 16 August 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
4400000
Answer: 4.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 15
Answer: (x - 3)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 43°. Find adjacent side
Answer: 24.9cm -
4. Ratio Mixed ratio problems
In ratio 1:3:1, what fraction is the second part?
Answer: 3⁄5 -
5. Statistics Mean
The mean of 4 numbers is 34. If 3 of them are 38, 29, 27, what is the missing number?
Answer: 42