Rational/Irrational number

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

What is the square root of 121?

Back

11

Front

What is the value of √28 rounded to the nearest tenth?

Back

5.3

Front

Which is greater: -17.5 or -√121?

Back

-17.5 is greater than -√121.

Front

What two integers is √20 between?

Back

√20 is between 4 and 5.

Front

What is a perfect square?

Back

A perfect square is a number that can be expressed as the square of an integer.

Front

Which of the following is a rational number: 1/4, π, √3, 4.632789...?

Back

1/4 is a rational number.

Front

What is the square of 5?

Back

25

Front

Is the number 0 a rational number?

Back

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