Rational and Irrational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction or ratio 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 -10 a rational number?

Back

Yes, -10 is a rational number because it can be expressed as -10/1.

Front

Is √25 a rational number?

Back

Yes, √25 = 5, which is a rational number.

Front

What type of number is a fraction?

Back

A fraction is a rational number.

Front

Which of these is an example of a rational number: √4, √5, √3, √2?

Back

√4 is a rational number because √4 = 2.

Front

What is the decimal representation of a rational number?

Back

A rational number can have a terminating or repeating decimal representation.

Front

Is .141414141414... a rational number?

Back

Yes, .141414141414... is a rational number because it can be expressed as 14/99.

Front

Can a whole number be a rational number?

Back

Yes, all whole numbers are rational numbers because they can be expressed as a fraction with a denominator of 1.

Front

What is an example of an irrational number?

Back

An example of an irrational number is √2, which cannot be expressed as a fraction.