Keystones — Capstone
Five GCSE retrieval questions · 20 August 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄4 + 1⁄6 + 3⁄4
Answer: 7⁄6 -
2. Algebra
Factorise fully: 21x² + 21x
Answer: 3x(7x + 7) -
3. Geometry
Adjacent = 23cm, hypotenuse = 40cm. Find the angle
Answer: 54.9° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 24. If 5 of them are 41, 20, 32, 34, 24, what is the missing number?
Answer: -7