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Cornerstone · Grades 3–5 Keystones #1 28 September 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 September 2022 · mathsvault.uk/keystones

  1. 1. Number

    Add: 6⁄7 + 1⁄4

    Answer: 31⁄28
  2. 2. Algebra

    Solve: x + 5 = 12

    Answer: x = 7
  3. 3. Geometry

    Opposite = 20cm, adjacent = 12cm. Calculate the angle

    Answer: 59°
  4. 4. Ratio

    Calculate 10% of 72

    Answer: 7.2
  5. 5. Statistics

    A bag has 8 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 8⁄15

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