Keystones — Lintel

Five GCSE retrieval questions · 2 September 2025 · mathsvault.uk/keystones

1. Number

The sum of three consecutive numbers is 117. What are the numbers?

Answer: 38, 39, and 40
2. Algebra

Solve: ^x⁄₆ = 5.5

Answer: x = 33
3. Geometry

Adjacent = 26cm, hypotenuse = 35cm. Find the angle

Answer: 42°
4. Ratio

Find 51% of 222

Answer: 113.22
5. Statistics

Calculate the mean of: 16, 9, 17, 29, 33, 36, 31

Answer: 24.4

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