

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. 
If you decrease a number by 4 the result is 3. Solve n – 4 = 3 to find the number? 


A. 
1 
B. 
–1 


C. 
6 
D. 
7 


Hint 


3. 
The sum of the measures of the angles of a triangle is 180°. Find the missing measure. 





A. 
75 
B. 
90 


C. 
80 
D. 
100 


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. 
62°F 
B. 
54°F 


C. 
52°F 
D. 
44°F 


Hint 


5. 
Solve x + 9 = 11. 


A. 
11 
B. 
2 


C. 
2 
D. 
9 


Hint 


