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Cornerstone · Grades 3–5 Keystones #1 7 May 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 May 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 79 + 21

    Answer: 79 + 21 = 100
  2. 2. Algebra

    Solve: x + 10 = 18

    Answer: x = 8
  3. 3. Geometry

    Find the area of a circle with radius 6cm

    Answer: 113.cm²
  4. 4. Ratio

    Simplify: 15:6:9

    Answer: 5:2:3
  5. 5. Statistics

    Find the range of: 32, 6, 33, 19, 30

    Answer: 27

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