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Cornerstone · Grades 3–5 Keystones #1 24 January 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 January 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 3⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 49

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 3:1:2

    Answer: 63, 21 and 42
  5. 5. Statistics Mean

    Find the mean of: 4, 7, 4

    Answer: 5

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