Real Number System

Front

What is a whole number?

Back

A whole number is a non-negative integer, which includes 0 and all positive integers (0, 1, 2, 3, ...).

Front

Give an example of a whole number.

Back

17 is an example of a whole number.

Front

What is an integer?

Back

An integer is any whole number that can be positive, negative, or zero (e.g., -3, 0, 4).

Front

Classify -78.

Back

-78 is classified as an integer, rational number, and real number.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction or ratio of two integers (e.g., 1/2, 3, -4).

Front

What is an irrational number?

Back

An irrational number cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating (e.g., π, √2).

Front

Is √2 a rational number?

Back

No, √2 is an irrational number.

Front

What is the definition of a real number?

Back

A real number includes all the rational and irrational numbers, encompassing all numbers on the number line.

Front

What is the difference between rational and irrational numbers?

Back

Rational numbers can be expressed as fractions, while irrational numbers cannot be expressed as fractions.

Front

Is 5.2 a whole number?

Back

No, 5.2 is not a whole number; it is a decimal.