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Cornerstone · Grades 3–5 Keystones #1 25 June 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 25 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄12 + 5⁄12

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 3x + 7 = 31

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

    Calculate the hypotenuse when a = 4cm and b = 12cm

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 117 in the ratio 2:4:3

    Answer: 26, 52 and 39
  5. 5. Statistics Mean

    Find the mean of: 2, 6, 16, 2

    Answer: 6.5

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