The Real Number System

Front

What is a Whole Number?

Back

A Whole Number is a non-negative integer, including zero. Examples: 0, 1, 2, 3, ...

Front

What is a Natural Number?

Back

A Natural Number is a positive integer, starting from 1. Examples: 1, 2, 3, ...

Front

What is an Integer?

Back

An Integer is a whole number that can be positive, negative, or zero. Examples: -2, -1, 0, 1, 2.

Front

What is a Rational Number?

Back

A Rational Number is any number that can be expressed as a fraction a/b, where a and b are integers and b is not zero. Examples: 1/2, 3, -4.

Front

What is a Real Number?

Back

A Real Number includes all the rational and irrational numbers. Examples: 1, -3.5, √2.

Front

What is an Irrational Number?

Back

An Irrational Number cannot be expressed as a simple fraction. Its decimal form goes on forever without repeating. Examples: π, √2.

Front

Classify the number 0.5.

Back

0.5 is a Rational Number and a Real Number.

Front

Classify the number 0.

Back

0 is a Whole Number, Integer, Rational Number, and Real Number.

Front

Classify the number -3.

Back

-3 is an Integer, Rational Number, and Real Number.

Front

Classify the number 5/2.

Back

5/2 is a Rational Number and a Real Number.