Rational vs. Irrational

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 the number 0.75 rational or irrational?

Back

Front

Back

Rational, because it is a fraction of two integers.

Front

Back

Rational, because it is a fraction of two integers.

Front

Back

Front

What is the cube root of 27?

Back

3, which is a rational number.

Front

What is the square root of 25?

Back

5, which is a rational number.

Front

What is the square root of 44?

Back

Approximately 6.63, which is irrational.

Front

Is the square root of 31 rational or irrational?

Back

Irrational, because it cannot be expressed as a fraction.