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Cornerstone · Grades 3–5 Keystones #1 27 June 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 27 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x - 16 = 14

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 14cm

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Divide 170 in the ratio 2:2:1

    Answer: 68, 68 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 31, 5, 13, 34, 9, 9

    Answer: 16.8

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