3). What is the smallest perfect square greater than 20?

Answer:_________


4). What is the largest perfect square less than 50?

Answer:_________


5). What is the difference of the two largest perfect squares smaller than 100?

Answer:_________


6). What is the cube root (third root) of 27?

Answer:_________


7). What is the fourth root of 16?

Answer:_________


8).

Answer:_________


9).

Answer:_________