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Cornerstone · Grades 3–5 Keystones #1 9 May 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 May 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 6 = 51

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 13cm

    Answer: 14.76cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 35, 45, 13, 39, 14, 44, 21, 29

    Answer: 30

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