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Cornerstone · Grades 3–5 Keystones #1 10 November 2024 Skills week 1 of 7
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Five GCSE retrieval questions · 10 November 2024 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 1⁄3

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

    Solve: 2x - 18 = 2

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 2:1:3

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

    Find the mean of: 13, 18, 10

    Answer: 13.666666666667

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