8.2 Understand Real Numbers System

Front

What is a real number?

Back

A real number is any number that can be found on the number line, including both rational and irrational numbers.

Front

Define an integer.

Back

An integer is any whole number that can be positive, negative, or zero.

Front

Are all integers rational numbers?

Back

True, all integers are rational numbers because they can be expressed as a fraction with a denominator of 1.

Front

What is an example of a rational number?

Back

An example of a rational number is 1/2 or 0.75.

Front

What is an example of an irrational number?

Back

An example of an irrational number is π (pi) or √2.

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

What is a whole number?

Back

A whole number is a non-negative integer, including zero.

Front

Is -22 an integer?

Back

Yes, -22 is an integer.

Front

What is the decimal representation of 1/4?

Back

The decimal representation of 1/4 is 0.25.

Front

What type of number is 0?

Back

0 is classified as an integer and a rational number.