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Cornerstone · Grades 3–5 Keystones #1 11 November 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 November 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 3⁄6

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 32

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 7cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 98 in the ratio 3:2:2

    Answer: 42, 28 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 37, 17, 46, 11, 11, 16

    Answer: 23

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