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Cornerstone · Grades 3–5 Keystones #1 4 July 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 4 July 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 2⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 63

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 10cm

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Share 57 in the ratio 2:1

    Answer: 38 and 19
  5. 5. Statistics Mean

    Find the mean of: 14, 6, 3, 12

    Answer: 8.75

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