Exploring Rational and Irrational Numbers

The video tutorial covers the basics of whole numbers, fractions, and decimals, including terminating and repeating decimals. It introduces irrational numbers and explains the concept of perfect and not perfect squares. The tutorial also explores square roots, providing examples and calculations, and differentiates between rational and irrational numbers.

Which of the following is a whole number?

• 3

• 1.9

• 4.5

• 2.7

What is a perfect square?

• A number that can be divided by 2

• A number that ends in zero

• A number that is the product of a number multiplied by itself

• A number that is a fraction

What is the area of a square with sides of length 5?

• 25

• 15

• 10

• 20

What is the square root of 64?

• 6

• 7

• 8

• 9

Which of the following is NOT a perfect square?

• 25

• 49

• 36

• 50

What is the square root of 100?

• 8

• 10

• 9

• 11

Which of the following is an irrational number?

• 17

• 16

• 9

• 4

What is the square root of 81?

• 10

• 9

• 8

• 7

What does absolute value represent?

• The positive value of a number

• The distance from zero

• The negative value of a number

• The reciprocal of a number

What is the absolute value of -4?

• -4

• 8

• 0

• 4