Keystones — Lintel
Five GCSE retrieval questions · 8 November 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.058
Answer: 5.8 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 59°. Find adjacent side
Answer: 13.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 38. If 3 of them are 26, 20, 50, what is the missing number?
Answer: 56