

1. 
Evaluate 21^{2}. 


A. 
421 
B. 
422 


C. 
442 
D. 
441 


Hint 


2. 
Which is not a perfect square? 


A. 
169 
B. 
100 


C. 
48 
D. 
144 


Hint 


3. 
Find the area of the square. 





A. 
36 units^{2} 
B. 
49 units^{2} 


C. 
56 units^{2} 
D. 
64 units^{2} 


Hint 


4. 
Mr. Williams finds tile on sale for $2.00 per square foot. If he wants to put tile in a square room that measures 12 feet on each side, how much will he spend? 


A. 
$144 
B. 
$288 


C. 
$240 
D. 
$100 


Hint 


5. 
Which number is a perfect square? 


A. 
324 
B. 
325 


C. 
326 
D. 
327 


Hint 


