Sets of Real Numbers

Front

What is a whole number?

Back

A whole number is a non-negative integer, which includes 0 and all positive integers (0, 1, 2, 3, ...).

Front

Which of the following is a whole number: √25, 0, 9?

Back

All of the above are whole numbers.

Front

What are the sets of real numbers?

Back

The sets of real numbers include rational numbers (fractions), irrational numbers (non-repeating, non-terminating decimals), integers, whole numbers, and natural numbers.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b is not zero.

Front

Is -8 a rational number?

Back

Yes, -8 is a rational number because it can be expressed as -8/1.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Front

Which of the following is an integer: -1, 0, 3?

Back

All of the above are integers.

Front

What is an example of an irrational number?

Back

An example of an irrational number is π (pi), which cannot be expressed as a fraction.

Front

True or False: All integers are rational numbers.

Back

True, because integers can be expressed as a fraction with a denominator of 1.

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.