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Cornerstone · Grades 3–5 Keystones #1 14 June 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄4

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 37

    Answer: x = 5
  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

    Share 55 in the ratio 1:4

    Answer: 11 and 44
  5. 5. Statistics Mean

    Find the mean of: 7, 10, 6, 4

    Answer: 6.75

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