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Cornerstone · Grades 3–5 Keystones #1 4 April 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 April 2021 · mathsvault.uk/keystones

  1. 1. Number

    Add: 1⁄7 + 3⁄8

    Answer: 29⁄56
  2. 2. Algebra

    Solve: 7x = 49

    Answer: x = 7
  3. 3. Geometry

    Find the area of a circle with radius 10cm

    Answer: 314.16cm²
  4. 4. Ratio

    Find 60% of 341

    Answer: 204.6
  5. 5. Statistics

    Calculate the mean of: 31, 49, 7, 18, 40, 42, 21

    Answer: 29.7

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