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Cornerstone · Grades 3–5 Keystones #1 23 June 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 5⁄8

    Answer: 31⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x - 19 = 29

    Answer: x = 12
  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

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics Mean

    Find the mean of: 5, 17, 8, 7, 11

    Answer: 9.6

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