Keystones — Lintel

Five GCSE retrieval questions · 17 June 2025 · mathsvault.uk/keystones

1. Number

The sum of three consecutive numbers is 102. What are the numbers?

Answer: 33, 34, and 35
2. Algebra

Solve: ^x⁄₇ = 4.1428571428571

Answer: x = 29
3. Geometry

Adjacent = 16cm, hypotenuse = 27cm. Find the angle

Answer: 53.7°
4. Ratio

Simplify: 15:6:15

Answer: 5:2:5
5. Statistics

Calculate the mean of: 29, 33, 29, 24, 5, 26

Answer: 24.3

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