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Cornerstone · Grades 3–5 Keystones #1 10 February 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 February 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 4x + 5 = x + 26

    Answer: x = 7
  3. 3. Geometry

    Opposite = 11cm, hypotenuse = 15.6cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Simplify: 8:10:8

    Answer: 4:5:4
  5. 5. Statistics

    Find the range of: 42, 15, 45, 23, 20

    Answer: 30

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