Keystones — Lintel

Five GCSE retrieval questions · 18 December 2023 · mathsvault.uk/keystones

1. Number

Calculate: -7 + (1) + (-7)

Answer: -13
2. Algebra

Solve: ^x⁄₈ = 3

Answer: x = 24
3. Geometry

Adjacent = 20cm, hypotenuse = 35cm. Find the angle

Answer: 55.2°
4. Ratio

Calculate 39% of 668

Answer: 260.52
5. Statistics

Find the range of: 30, 47, 36, -19, 4

Answer: 66

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