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Cornerstone · Grades 3–5 Keystones #1 30 April 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 30 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 19 = 9

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 145 in the ratio 1:1:3

    Answer: 29, 29 and 87
  5. 5. Statistics Mean

    Find the mean of: 2, 9, 14, 11, 4

    Answer: 8

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