Keystones — Lintel
Five GCSE retrieval questions · 18 November 2024 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0047
Answer: 4.7 × 10^-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x + 4
Answer: (x - 2)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 56°. Find adjacent side
Answer: 10.cm -
4. Ratio Mixed ratio problems
Simplify: 8:12:20
Answer: 2:3:5 -
5. Statistics Mean
The mean of 6 numbers is 31. If 5 of them are 17, 44, 24, 15, 15, what is the missing number?
Answer: 71