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Cornerstone · Grades 3–5 Keystones #1 17 March 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 March 2022 · mathsvault.uk/keystones

  1. 1. Number

    Find the total of 146, 192, and 56

    Answer: 394
  2. 2. Algebra

    Solve: 9x = 36

    Answer: x = 4
  3. 3. Geometry

    Find the area of a circle with radius 10cm

    Answer: 314.16cm²
  4. 4. Ratio

    Find 59% of 168

    Answer: 99.12
  5. 5. Statistics

    A bag has 5 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 5⁄13

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