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Cornerstone · Grades 3–5 Keystones #1 4 June 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 4 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 15 = 25

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 2:2:3

    Answer: 26, 26 and 39
  5. 5. Statistics Mean

    Find the mean of: 8, 19, 11, 9

    Answer: 11.75

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