Keystones — Capstone
Five GCSE retrieval questions · 13 April 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 135. What are the numbers?
Answer: 44, 45, and 46 -
2. Algebra
Solve: x⁄5 = 6.6
Answer: x = 33 -
3. Geometry
Adjacent = 19cm, hypotenuse = 25cm. Find the angle
Answer: 40.5° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 40. If 5 of them are 20, 19, 50, 32, 16, what is the missing number?
Answer: 103