

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. 
Solve w + 3 = 11. 


A. 
8 
B. 
7 


C. 
14 
D. 
9 


Hint 


3. 
Solve x + 3.57 = 6.87. 


A. 
3.30 
B. 
10.44 


C. 
2.43 
D. 
3.20 


Hint 


4. 
The sum of the measures of the angles of a triangle is 180°. Find the missing measure. 





A. 
75 
B. 
80 


C. 
90 
D. 
100 


Hint 


5. 
Solve x + 9 = 11. 


A. 
11 
B. 
2 


C. 
9 
D. 
2 


Hint 


