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Cornerstone · Grades 3–5 Keystones #1 19 May 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 May 2022 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 94 + ? = 192

    Answer: 98
  2. 2. Algebra

    Simplify: 2x + 2x

    Answer: 4x
  3. 3. Geometry

    Calculate the area of a circle with diameter 9cm

    Answer: 63.62cm²
  4. 4. Ratio

    Simplify the ratio 12:6

    Answer: 2:1
  5. 5. Statistics

    A bag has 4 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 4⁄11

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