Keystones — Lintel
Five GCSE retrieval questions · 11 June 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
45000000
Answer: 4.5 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 6
Answer: (x + 6)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 46°. Find adjacent side
Answer: 25.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
The mean of 6 numbers is 22. If 5 of them are 22, 20, 39, 41, 24, what is the missing number?
Answer: -14