Keystones — Lintel
Five GCSE retrieval questions · 23 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
26000000
Answer: 2.6 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 49°. Find adjacent side
Answer: 24.3cm -
4. Ratio Mixed ratio problems
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 34. If 4 of them are 19, 29, 19, 34, what is the missing number?
Answer: 69