Real Numbers Review

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 an irrational number.

Back

An irrational number is a number that cannot be expressed as a fraction of two integers. Its decimal representation is non-repeating and non-terminating.

Front

What is a rational number?

Back

Front

Identify the set of numbers that includes all integers, fractions, and irrational numbers.

Back

The set of real numbers.

Front

What is the square root of 50 approximately?

Back

The square root of 50 is approximately 7.07.

Front

Back

Between 9 and 10.

Front

What type of number is -18.95?

Back

-18.95 is a rational number and a real number.

Front

Which of the following is NOT a rational number: 2.5, 5.72314..., -17, 1/2?

Back

5.72314... is NOT a rational number; it is an irrational number.

Front

What is the difference between whole numbers and integers?

Back

Whole numbers are non-negative integers (0, 1, 2, ...), while integers include all whole numbers and their negative counterparts (..., -2, -1, 0, 1, 2, ...).

Front

Is the number 5 a rational number?

Back