Rational Numbers

The video tutorial explains rational numbers, which can be expressed as fractions, using examples from sports and everyday scenarios. It contrasts rational numbers with irrational numbers, like pi, which cannot be exactly expressed as fractions. The tutorial also highlights the infinite ways to express rational numbers.

What is a rational number?

• A number that is always negative

• A number that is always positive

• A number that can be expressed as a fraction

• A number that cannot be expressed as a fraction

Which of the following is a rational number?

• Square root of 2

• Pi

• 0.333

• e (Euler's number)

How can a gain of yardage in football be expressed?

• As a complex number

• As a positive rational number

• As a negative rational number

• As an irrational number

Why is pi considered an irrational number?

• It is a negative number

• It is a whole number

• It cannot be exactly expressed as a fraction

• It can be exactly expressed as a fraction

Which of the following can be expressed in infinite ways as a fraction?

• 3.14159

• 0.5

• 1.732

• Square root of 3