9

.

Perfect Square:

square

units

Square Root:

examples:

Perfect square - 9 multiplied by 9 is a perfect square because it = 81

(two same numbers multiplied together create a perfect square)

square units - on grid paper how many squares would be filled to creat 9 multiplied by 9

square roots - √81 () using this symbol divide 81 into 2 and if the number you get is even then it is a perfect square