Keystones — Capstone
Five GCSE retrieval questions · 14 June 2024 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Factorise fully: 10x² + 25x
Answer: 5x(2x + 5) -
3. Geometry
Adjacent = 16cm, hypotenuse = 24cm. Find the angle
Answer: 48.2° -
4. Ratio
Calculate 10.1% of 871
Answer: 87.97 -
5. Statistics
The mean of 6 numbers is 20. If 5 of them are 38, 16, 18, 31, 21, what is the missing number?
Answer: -4