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Cornerstone · Grades 3–5 Keystones #1 23 January 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 January 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 53

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 29, 37, 5, 40, 10, 38

    Answer: 26.5

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