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

  2.   Solve x + 3.57 = 6.87.
    A. 2.43 B. 3.30
    C. 10.44 D. 3.20
    Hint

  3.   The temperature rose 34°F from 7:00 A.M. to 5:00 P.M. The temperature was 88°F at 5:00 P.M. Use the equation t + 34 = 88 to find the temperature at 7:00 A.M.
    A. 52°F B. 62°F
    C. 44°F D. 54°F
    Hint

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

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



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