Addition and Subtraction:

Whole Numbers, Integers, and Real Numbers

Whole Numbers, Integers, and Real Numbers are different categories of numbers. Throughout the Resource Center, we will make references to whole numbers and integers in regard to rounding. The numbers you will use throughout your life are part of the real numbers. Learn about these three categories in the video below.

Real World Application

This is a screenshot of some computer coding. There are five lines of text. They have the following text. CREATE TABLE people ( id INTEGER, name TEXT, age INTEGER );

To work in computer programming and with databases, it is important to understand the different classifications of numbers. Some programming languages use data types such as integers and real numbers as well as strings, null values, and other data types. Here is a piece of coding from the coding language Python that uses integers.

Video Source (05:36 mins) | Transcript

Additional Resources

Practice Problems

  1. Which of these numbers are whole numbers? (Indicate all that apply.)
    1. \(-2\)
    2. \(-1.57\)
    3. 0
    4. 1
    5. 5
    6. 9.9999
  2. Which of these numbers are integers? (Indicate all that apply.)
    1. \(-2\)
    2. \(-1.57\)
    3. 0
    4. 1
    5. 5
    6. 9.9999
  3. Which of the following numbers are real numbers? (Indicate all that apply.)
    1. \(-2\)
    2. \(-1.57\)
    3. 0
    4. 1
    5. 5
    6. 9.9999

Solutions

  1. C, D, and E. (Solution Video | Transcript)
  2. A, C, D, and E. (Solution Video | Transcript)
  3. A, B, C, D, E, and F. (Solution Video | Transcript)