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Cornerstone · Grades 3–5 Keystones #1 14 July 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 14 July 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 18

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 1:4:2

    Answer: 20, 80 and 40
  5. 5. Statistics Mean

    Find the mean of: 3, 2, 15, 4

    Answer: 6

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