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Cornerstone · Grades 3–5 Keystones #1 22 November 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 November 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 2⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x - 16 = 16

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 1:3

    Answer: 12 and 36
  5. 5. Statistics Mean

    Find the mean of: 6, 14, 15, 7

    Answer: 10.5

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