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

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

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

  5.   Solve 1 = p - 16.
    A. -15 B. 16
    C. 17 D. 1
    Hint



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