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Lintel · Grades 5–7 Keystones #1 21 October 2021
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Keystones — Lintel

Five GCSE retrieval questions · 21 October 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 998 + 805

    Answer: 1803
  2. 2. Algebra

    Solve: 2x = 18

    Answer: x = 9
  3. 3. Geometry

    Calculate the area of a circle with diameter 9cm

    Answer: 63.62cm²
  4. 4. Ratio

    Simplify: 9:15:15

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

    A spinner has 5 red, 5 blue and 5 green sections. Probability of landing on red?

    Answer: 1⁄3

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