Keystones — Lintel
Five GCSE retrieval questions · 21 November 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0034
Answer: 3.4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 51°. Find adjacent side
Answer: 20.8cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 28. If 4 of them are 16, 38, 49, 36, what is the missing number?
Answer: 1