Understanding Square Roots

The video tutorial explains how to find principal square roots of various numbers, including 4, 100, 36, 121, 2500, 0, 400, 9, and a fraction. It demonstrates the process of identifying non-negative numbers that, when squared, equal the given radicand. The tutorial uses examples to illustrate the concept of square roots, emphasizing the use of perfect squares and prime factors for simplification.

What is the principal square root of 4?

• 3

• 4

• 2

• 1

Which number is the principal square root of 100?

• 5

• 10

• 15

• 20

What is the principal square root of 36?

• 4

• 5

• 6

• 7

The principal square root of 121 is:

• 11

• 12

• 9

• 10

How can the square root of 2500 be simplified?

• 40

• 50

• 25

• 30

What is the principal square root of 0?

• 2

• 3

• 1

• 0

Which number is the principal square root of 400?

• 15

• 18

• 20

• 25

What is the principal square root of 9?

• 4

• 2

• 5

• 3

If 64/49 is a fraction, what is its principal square root?

• 8/7

• 7/8

• 6/5

• 5/6

Which of the following is a perfect square?

• 81

• 72

• 64

• 50