Keystones — Capstone
Five GCSE retrieval questions · 10 January 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 138. What are the numbers?
Answer: 45, 46, and 47 -
2. Algebra
Solve: x⁄5 = 4.6
Answer: x = 23 -
3. Geometry
Adjacent = 21cm, hypotenuse = 40cm. Find the angle
Answer: 58.3° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 25. If 3 of them are 23, 31, 36, what is the missing number?
Answer: 10