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

Five GCSE retrieval questions · 7 May 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 2⁄7

    Answer: 65⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 34

    Answer: x = 9
  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

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Find the mean of: 10, 11, 11

    Answer: 10.666666666667

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