

1. 
Determine which number is not prime. 


A. 
11 
B. 
19 


C. 
57 
D. 
61 


Hint 


2. 
Find the prime factorization of 126. 


A. 
2 × 3 × 3 × 7 
B. 
2 × 3 × 3 


C. 
2 × 3 × 7 
D. 
2 × 2 × 3 × 3 × 7 


Hint 


3. 
The volume of a box is found by multiplying its height h, length l, and width w. If the measure of the volume of a box is 385, what could its dimensions be? 





A. 
3 by 5 by 8 
B. 
5 by 7 by 11 


C. 
3 by 5 by 7 
D. 
5 by 7 by 7 


Hint 


4. 
The rectangles show that the number 23 ______. 





A. 
has three factors 
B. 
is composite 


C. 
is prime 
D. 
is neither prime nor composite 


Hint 


5. 
Find the prime factorization of 105. 


A. 
5 × 21 
B. 
2 × 5 × 7 


C. 
5 × 15 
D. 
3 × 5 × 7 


Hint 

