Rational and 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 cannot be written as a ratio of two integers.

Front

Is 0 a rational number?

Back

Yes, 0 is a rational number because it can be expressed as 0/1.

Front

Is -3.5 a rational number?

Back

Yes, -3.5 is a rational number because it can be expressed as -7/2.

Front

What is the square root of 16?

Back

The square root of 16 is 4, which is a rational number.

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 number is 1/4?

Back

1/4 is a rational number.

Front

Is the number 3.14159 rational or irrational?

Back

3.14159 is an approximation of π (pi), which is an irrational number.

Front

What is an example of an irrational number?

Back

An example of an irrational number is √3.

Front

Is -5 a rational number?

Back

Yes, -5 is a rational number because it can be expressed as -5/1.