Keystones — Lintel

Five GCSE retrieval questions · 18 February 2022 · mathsvault.uk/keystones

1. Number

What is the missing number: 91 + ? = 139

Answer: 48
2. Algebra

Solve: ^x⁄₇ = 5.5714285714286

Answer: x = 39
3. Geometry

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

Answer: 37.9°
4. Ratio

Simplify the ratio 4m:400cm

Answer: 1:100
5. Statistics

Find the range of: 27, -21, 10, 29, 14

Answer: 50

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