Keystones — Lintel

Five GCSE retrieval questions · 9 August 2022 · mathsvault.uk/keystones

1. Number

Calculate: 678 + 231

Answer: 678 + 231 = 909
2. Algebra

Solve: ^x⁄₆ = 1.1666666666667

Answer: x = 7
3. Geometry

Opposite = 16cm, adjacent = 20cm. Calculate the angle

Answer: 38.7°
4. Ratio

Simplify: 12:4:12

Answer: 3:1:3
5. Statistics

Find the range of: -5, 32, 20, -25, 42

Answer: 67

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