Keystones — Capstone
Five GCSE retrieval questions · 30 March 2026 · mathsvault.uk/keystones
-
1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Factorise fully: 18x² + 15x
Answer: 3x(6x + 5) -
3. Geometry
Adjacent = 28cm, hypotenuse = 48cm. Find the angle
Answer: 54.3° -
4. Ratio
Calculate 39% of 844
Answer: 329.16 -
5. Statistics
The mean of 5 numbers is 23. If 4 of them are 25, 41, 48, 23, what is the missing number?
Answer: -22