Keystones — Lintel

Five GCSE retrieval questions · 6 June 2025 · mathsvault.uk/keystones

1. Number

The sum of three consecutive numbers is 135. What are the numbers?

Answer: 44, 45, and 46
2. Algebra

Solve: ^x⁄₆ = 5.3333333333333

Answer: x = 32
3. Geometry

Opposite = 18cm, adjacent = 14cm. Calculate the angle

Answer: 52.1°
4. Ratio

Simplify the ratio 8m:800cm

Answer: 1:100
5. Statistics

Find the range of: 3, 40, -19, -19, 15

Answer: 59

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