Keystones — Capstone
Five GCSE retrieval questions · 16 June 2026 · mathsvault.uk/keystones
-
1. Number
The sum of three consecutive numbers is 102. What are the numbers?
Answer: 33, 34, and 35 -
2. Algebra
Factorise fully: 10x² + 15x
Answer: 5x(2x + 3) -
3. Geometry
Adjacent = 30cm, hypotenuse = 47cm. Find the angle
Answer: 50.3° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 31. If 5 of them are 33, 40, 50, 24, 17, what is the missing number?
Answer: 22