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. 8 B. 9
    C. 14 D. 7
    Hint

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

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

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



Glencoe
The McGraw-Hill Companies