Keystones — Capstone
Five GCSE retrieval questions · 21 April 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄2 + 3⁄4 + 1⁄4
Answer: 3⁄2 -
2. Algebra
Factorise fully: 9x² + 15x
Answer: 3x(3x + 5) -
3. Geometry
Adjacent = 14cm, hypotenuse = 29cm. Find the angle
Answer: 61.1° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 40. If 4 of them are 23, 23, 50, 37, what is the missing number?
Answer: 67