Keystones — Lintel

Five GCSE retrieval questions · 7 August 2024 · mathsvault.uk/keystones

1. Number

What is the missing number: 36 + ? = 113

Answer: 77
2. Algebra

Solve: ^x⁄₈ = 4

Answer: x = 32
3. Geometry

Adjacent = 14cm, hypotenuse = 29cm. Find the angle

Answer: 61.1°
4. Ratio

Simplify: 12:15:18

Answer: 4:5:6
5. Statistics

A bag has 4 red and 4 blue balls. What is the probability of picking a red ball?

Answer: ¹⁄₂

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