Keystones — Capstone
Five GCSE retrieval questions · 31 August 2024 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 129. What are the numbers?
Answer: 42, 43, and 44 -
2. Algebra
Factorise fully: 20x² + 16x
Answer: 4x(5x + 4) -
3. Geometry
Adjacent = 15cm, hypotenuse = 22cm. Find the angle
Answer: 47° -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 31. If 4 of them are 36, 25, 43, 48, what is the missing number?
Answer: 3