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Cornerstone · Grades 3–5 Keystones #1 24 July 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 July 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 6⁄7

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 43

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 3:4

    Answer: 18 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 15, 46, 29, 14, 26, 36, 16

    Answer: 26

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