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

  2.   If you decrease a number by 4 the result is 3. Solve n – 4 = 3 to find the number?
    A. 6 B. 7
    C. –1 D. 1
    Hint

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

  4.   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

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