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Evaluating Expressions (2)

Evaluate the following expressions for:            k = 25

Example:
1)   k + 7               2)    7 - k               3)    3 + k   
      5 + 7 = 12               ________             _______   

4)   k + 10             5)    13 - k              6)    k - 2   
      _______               ________              _______

Evaluate the following expressions for:            z = 10


1)   z + 17            2)    12 + z               3)   0 + z   
      _______               ________             _______   

4)   z - 3             5)    17 - z                6)    11 + z   
      _______               ________              _______

Evaluate the following expressions for:            * = 20


1)   * - 17            2)    40 - *               3)    22 + *   
      _______              ________              _______   

4)   *  + 100          5)    23 - *              6)    66 + *   
      _______              ________              _______