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Cornerstone · Grades 3–5 Keystones #1 6 May 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 May 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 2⁄11

    Answer: 4⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x + 15 = 39

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 9cm

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 37, 28, 31, 34, 48, 12

    Answer: 31.7

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