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Cornerstone · Grades 3–5 Keystones #1 6 June 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 6⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x + 12 = 60

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 171 in the ratio 3:2:4

    Answer: 57, 38 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 42, 50, 9, 49, 39, 32, 36, 39

    Answer: 37

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