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Cornerstone · Grades 3–5 Keystones #1 27 November 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 27 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 3⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 4 = 58

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 2:3

    Answer: 36 and 54
  5. 5. Statistics Mean

    Find the mean of: 13, 5, 25, 13

    Answer: 14

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