Keystones — Lintel
Five GCSE retrieval questions · 8 April 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
2800000
Answer: 2.8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 2)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 59°. Find adjacent side
Answer: 20.6cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 27. If 3 of them are 35, 28, 33, what is the missing number?
Answer: 12