Understanding Rational Numbers

The video tutorial by Mr. J explains rational numbers, which can be expressed as fractions of two integers or as decimals that terminate or repeat. The video provides examples, such as the number five and the decimal 0.9, to illustrate how they can be written as fractions, confirming their rationality. The tutorial concludes with a brief mention of further resources for more detailed explanations.

What is a rational number?

• A number that is always a decimal

• A number that is always an integer

• A number that can be expressed as a fraction of two integers

• A number that cannot be expressed as a fraction

Which of the following is a correct fraction representation of the number 5?

• 25/5

• 5/0

• 7/2

• 10/3

Why is the number 5 considered a rational number?

• Because it is a decimal

• Because it is a whole number

• Because it can be written as a fraction of two integers

• Because it is an irrational number

What type of decimal is 0.9?

• Non-terminating decimal

• Repeating decimal

• Terminating decimal

• Irrational decimal

How can 0.9 be expressed as a fraction?

• 9/1

• 9/10

• 1/9

• 10/9