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Cornerstone · Grades 3–5 Keystones #1 26 July 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 July 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄3

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

    Solve: 4x - 13 = 7

    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

    Share 84 in the ratio 2:1

    Answer: 56 and 28
  5. 5. Statistics Mean

    Find the mean of: 3, 5, 15, 16

    Answer: 9.75

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