Rational / Irrational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction, where both the numerator and the denominator are integers, and the denominator is not zero.

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction. It is non-repeating and non-terminating when expressed in decimal form.

Front

Is √9 a rational number?

Back

Yes, √9 = 3, which can be expressed as the fraction 3/1.

Front

Is √2 a rational number?

Back

No, √2 is an irrational number because it cannot be expressed as a fraction.

Front

What type of decimal is a rational number?

Back

Rational numbers can be expressed as either terminating or repeating decimals.

Front

What type of decimal is an irrational number?

Back

Irrational numbers are represented by non-repeating, non-terminating decimals.

Front

True or False: A rational number can be written as a fraction.

Back

True.

Front

True or False: Non-repeating, non-terminating decimals are rational numbers.

Back

False.

Front

Can natural numbers be expressed as fractions?

Back

Yes, natural numbers can be expressed as fractions (e.g., 5 = 5/1).

Front

What is an example of a rational number?

Back

Examples include 1/2, 3, -4, and 0.75.