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Cornerstone · Grades 3–5 Keystones #1 10 August 2024
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 August 2024 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 9x = 72

    Answer: x = 8
  3. 3. Geometry

    Opposite = 8cm, adjacent = 13cm. Calculate the angle

    Answer: 31.6°
  4. 4. Ratio

    Simplify: 9:6:18

    Answer: 3:2:6
  5. 5. Statistics

    A bag has 4 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 2⁄5

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