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Cornerstone · Grades 3–5 Keystones #1 1 April 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 April 2021 · mathsvault.uk/keystones

  1. 1. Number

    Find the total of 105, 297, and 120

    Answer: 522
  2. 2. Algebra

    Solve: x + 11 = 23

    Answer: x = 12
  3. 3. Geometry

    Find the distance between (2, 4) and (6, 9)

    Answer: 6.4
  4. 4. Ratio

    Simplify the ratio 20:25

    Answer: 4:5
  5. 5. Statistics

    A bag has 7 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 710