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Cornerstone · Grades 3–5 Keystones #1 1 October 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 October 2022 · mathsvault.uk/keystones

  1. 1. Number

    70000

    Answer: 7 × 104
  2. 2. Algebra

    Solve: 2x = 8

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 15cm

    Answer: 16.55cm
  4. 4. Ratio

    Simplify the ratio 9:18

    Answer: 1:2
  5. 5. Statistics

    Calculate the range of: 76, 129, 100, 118, 121, 49

    Answer: 80

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