Keystones — Lintel
Five GCSE retrieval questions · 1 July 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
480000
Answer: 4.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 35
Answer: (x + 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 41°. Find adjacent side
Answer: 12.cm -
4. Ratio Mixed ratio problems
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 28. If 4 of them are 30, 24, 17, 31, what is the missing number?
Answer: 38