Keystones — Capstone

Five GCSE retrieval questions · 16 January 2026 · mathsvault.uk/keystones

1. Number

The sum of three consecutive numbers is 129. What are the numbers?

Answer: 42, 43, and 44
2. Algebra

Solve: ^x⁄₃ = 6.6666666666667

Answer: x = 20
3. Geometry

Adjacent = 26cm, hypotenuse = 42cm. Find the angle

Answer: 51.8°
4. Ratio

Simplify the ratio 8m:800cm

Answer: 1:100
5. Statistics

The mean of 6 numbers is 20. If 5 of them are 17, 35, 34, 26, 34, what is the missing number?

Answer: -26

Same five questions for everyone on Capstone on this date. Sets are stored as JSON for reliable print-on-demand — sign in for school-branded PDFs.