Keystones — Lintel

Five GCSE retrieval questions · 29 July 2022 · mathsvault.uk/keystones

1. Number

What is the missing number: 72 + ? = 182

Answer: 110
2. Algebra

Solve: ^x⁄₅ = 2

Answer: x = 10
3. Geometry

Calculate the area of a circle with diameter 8cm

Answer: 50.27cm²
4. Ratio

Simplify: 9:6:9

Answer: 3:2:3
5. Statistics

Calculate the mean of: 6, 31, 30, 27, 12, 40, 34

Answer: 25.7

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