Real Numbers

Front

What is a real number?

Back

A real number is any number that can be found on the number line, including both rational and irrational numbers.

Front

Define rational numbers.

Back

Rational numbers are numbers that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What are irrational numbers?

Back

Irrational numbers are numbers that cannot be expressed as a simple fraction; their decimal representation goes on forever without repeating.

Front

What is a perfect square?

Back

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

Front

Estimate the square root of 28.

Back

Approximately 5.3.

Front

What is the approximate value of √2?

Back

Approximately 1.4142, and it is an irrational number.

Front

How do you round 5.67 to the nearest tenth?

Back

5.7.

Front

Which of the following is an example of an irrational number: √8, ¾, 2, -1.325?

Back

√8.

Front

What is the best estimate of the square root of 63?

Back

Approximately 7.9.

Front

What is the square of 9?

Back

81.