Keystones — Lintel

Five GCSE retrieval questions · 20 April 2026 · mathsvault.uk/keystones

1. Number

What is the missing number: 37 + ? = 101

Answer: 64
2. Algebra

Solve: ^x⁄₃ = 10

Answer: x = 30
3. Geometry

Adjacent = 13cm, hypotenuse = 33cm. Find the angle

Answer: 66.8°
4. Ratio

Calculate 33.1% of 717

Answer: 237.33
5. Statistics

Find the range of: 48, 7, 32, 23, -29

Answer: 77

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