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Cornerstone · Grades 3–5 Keystones #1 22 May 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 May 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 7⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 41

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 3:1:3

    Answer: 60, 20 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 43, 20, 46, 21, 14, 19, 34

    Answer: 28.1

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