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Lintel · Grades 5–7 Keystones #1 18 January 2022
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Keystones — Lintel

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

  1. 1. Number

    What is the missing number: 30 + ? = 139

    Answer: 109
  2. 2. Algebra

    Solve: x⁄8 = 3.5

    Answer: x = 28
  3. 3. Geometry

    Find c if a = 18cm and b = 20cm in a right triangle

    Answer: 26.9cm
  4. 4. Ratio

    Simplify: 12:16:16

    Answer: 3:4:4
  5. 5. Statistics

    A spinner has 2 red, 2 blue and 2 green sections. Probability of landing on red?

    Answer: 1⁄3

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