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Cornerstone · Grades 3–5 Keystones #1 2 July 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 July 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 14

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

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

    Answer: 9.9cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 2:3:1

    Answer: 42, 63 and 21
  5. 5. Statistics Mean

    Find the mean of: 16, 8, 17

    Answer: 13.666666666667

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