Keystones — Lintel

Five GCSE retrieval questions · 5 July 2022 · mathsvault.uk/keystones

1. Number

What is the missing number: 42 + ? = 110

Answer: 68
2. Algebra

Solve: ^x⁄₃ = 10.666666666667

Answer: x = 32
3. Geometry

Adjacent = 18cm, hypotenuse = 24cm. Find the angle

Answer: 41.4°
4. Ratio

Simplify: 6:10:12

Answer: 3:5:6
5. Statistics

Find the range of: 41, -21, 23, -30, 15

Answer: 71

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