Keystones — Capstone
Five GCSE retrieval questions · 16 April 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 120. What are the numbers?
Answer: 39, 40, and 41 -
2. Algebra
Solve: x⁄5 = 6.8
Answer: x = 34 -
3. Geometry
Adjacent = 22cm, hypotenuse = 40cm. Find the angle
Answer: 56.6° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 23. If 5 of them are 46, 31, 45, 40, 29, what is the missing number?
Answer: -53