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Cornerstone · Grades 3–5 Keystones #1 3 July 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 3 July 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x + 13 = 34

    Answer: x = 3
  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

    Divide 126 in the ratio 2:1:4

    Answer: 36, 18 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 23, 7, 6, 24, 36, 37, 27

    Answer: 22.9

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