1.   The equation x + 3 = 5 is modeled below. To solve this problem using the model, what should you do first?
   
    A. Remove 3 positive counters from each side of the mat.
    B. Remove 5 positive counters from the right side of the mat.
    C. Add 5 negative counters to the left side of the mat.
    D. Add 3 positive counters to each side of the mat.
    Hint

  2.   Solve w + 3 = 11.
    A. 7 B. 8
    C. 9 D. 14
    Hint

  3.   The sum of the measures of the angles of a triangle is 180. Find the missing measure.
   
    A. 90 B. 75
    C. 100 D. 80
    Hint

  4.   Solve x + 9 = 11.
    A. 11 B. 2
    C. 9 D. -2
    Hint

  5.   Solve 3.2 + y = 8.7.
    A. -3.2 B. 11.9
    C. 5.5 D. 8.7
    Hint



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