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Cornerstone · Grades 3–5 Keystones #1 12 April 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 12 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 15

    Answer: x = 6
  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 208 in the ratio 3:1:4

    Answer: 78, 26 and 104
  5. 5. Statistics Mean

    Find the mean of: 13, 10, 7, 20

    Answer: 12.5

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