Rational and Irrational 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 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 √2 a rational or irrational number?

Back

Irrational

Front

Is -17.5 a rational or irrational number?

Back

Rational

Front

Which of the following is a rational number: 1/4, π, √3?

Back

1/4

Front

Which of the following is rational: .211232112421125..., π, √25, √12?

Back

√25

Front

What is the decimal representation of 1/4?

Back

0.25

Front

What is the square root of 25?

Back

5 (which is a rational number).

Front

Provide an example of an irrational number.

Back

π (pi) is an example of an irrational number.

Front

What is the sum of two rational numbers?

Back

The sum of two rational numbers is always a rational number.