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Cornerstone · Grades 3–5 Keystones #1 29 March 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 March 2022 · mathsvault.uk/keystones

  1. 1. Number

    500000

    Answer: 5 × 105
  2. 2. Algebra

    Solve: 2x = 8

    Answer: x = 4
  3. 3. Geometry

    Calculate the area of a circle with diameter 24cm

    Answer: 452.39cm²
  4. 4. Ratio

    Calculate 50% of 22

    Answer: 11
  5. 5. Statistics

    Calculate the mean of: 23, 39, 20, 26, 29, 50

    Answer: 31.2

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