Classification of Real Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but cannot be a fraction or decimal.

Front

What is a whole number?

Back

A whole number is a non-negative integer, which includes zero and all positive integers.

Front

What is a natural number?

Back

A natural number is a positive integer, starting from 1 and going upwards (1, 2, 3, ...).

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.

Front

What is a complex number?

Back

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit.

Front

Is 0 a natural number?

Back

No, 0 is not considered a natural number; it is a whole number.

Front

Is -8 an integer?

Back

Yes, -8 is an integer.

Front

Is √3 a rational number?

Back

No, √3 is an irrational number.

Front

What type of number is 3/4?

Back

3/4 is a rational number.