Keystones — Lintel
Five GCSE retrieval questions · 7 April 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0006
Answer: 6 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 26°. Find adjacent side
Answer: 14.4cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 33. If 3 of them are 42, 49, 30, what is the missing number?
Answer: 11