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

Five GCSE retrieval questions · 3 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 2⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x - 15 = 9

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 18 in the ratio 1:2

    Answer: 6 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 21, 9, 7, 33, 30, 35, 39

    Answer: 24.9

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