Real 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

Which of the following is a rational number: √110, √324, √65, √80?

Back

√324 is a rational number because it equals 18.

Front

What is the approximate value of √2?

Back

The approximate value of √2 is 1.4142, and it is classified as an irrational number.

Front

What is the value of √40?

Back

√40 is approximately 6.32.

Front

Between which two consecutive whole numbers does √40 lie?

Back

√40 lies between 6 and 7.

Front

How do you round √28 to the nearest tenth?

Back

√28 is approximately 5.3 when rounded to the nearest tenth.

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.

Front

Is √65 a rational or irrational number?

Back

√65 is an irrational number.

Front

What is the square root of a perfect square?

Back

The square root of a perfect square is a whole number. For example, √324 = 18.

Front

What is the difference between natural numbers and whole numbers?

Back

Natural numbers are positive integers (1, 2, 3, ...), while whole numbers include all natural numbers and zero (0, 1, 2, 3, ...).