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:_________