Squares, Square Roots, Cubes, & Cube Roots

What is the principal square root of 121?

11

Why is 16 a perfect square?

16 is a perfect square because it is the square of an integer. 4 squared equals 16.

What is the principal square root of 9?

3

What is 3 cubed?

3 cubed = 3 x 3 x 3 = 27

What is the square root of 9?

3, -3

Why is 4 a perfect square?

4 is a perfect square because it is the square of an integer. 2 squared equals 4.

What is the square root of 16?

4, -4

Why is 49 a perfect square?

49 is a perfect square because it is the square of an integer. 7 squared equals 49.

Why is 56 not a perfect square?

56 is not a perfect square, because there is no integer that when squared equals 56.

If a square has an area of 64, what is the length of each side?

8

What is the area of a square if one side is 9 feet long?

81 square feet

Explain how you find the square of any number.

Multiply the number times itself.

Explain what is unique about a number that is a perfect square?

Perfect squares are squares of INTEGERS.

A principal square root is always: a) Negative b) Positive c) A fraction d) A decimal

Positive

Which of the following is not a perfect square? a) 121 b) 64 c) 56 d) 81

c) 56

Which of the following is a perfect square? a) 44 b) 5 c) 10 d) 16

d) 16