Keystones — Capstone
Five GCSE retrieval questions · 1 December 2025 · mathsvault.uk/keystones
-
1. Number
The sum of three consecutive numbers is 147. What are the numbers?
Answer: 48, 49, and 50 -
2. Algebra
Solve: x⁄4 = 8.75
Answer: x = 35 -
3. Geometry
Adjacent = 19cm, hypotenuse = 30cm. Find the angle
Answer: 50.7° -
4. Ratio
Calculate 27.4% of 550
Answer: 150.7 -
5. Statistics
The mean of 6 numbers is 32. If 5 of them are 23, 50, 15, 35, 16, what is the missing number?
Answer: 53