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Cornerstone · Grades 3–5 Keystones #1 26 June 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 1⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 19

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 152 in the ratio 3:2:3

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

    Find the mean of: 10, 14, 5

    Answer: 9.6666666666667

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