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Cornerstone · Grades 3–5 Keystones #1 19 March 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 March 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 5⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 55

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 5cm

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics Mean

    Find the mean of: 14, 4, 5

    Answer: 7.6666666666667

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