Keystones — Lintel
Five GCSE retrieval questions · 27 December 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
2100000
Answer: 2.1 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 31°. Find adjacent side
Answer: 33.4cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 34. If 3 of them are 46, 35, 20, what is the missing number?
Answer: 35