# Absolute Value Basics

This section has the following videos:

• Lesson Video
• Example Set A Practice Problems (Video Solutions)
• Example Set B Practice Problems (Video Solutions)
• Example Set C Practice Problems (Video Solutions)

The concept of absolute value is very important for algebra students to understand. The key thing to know is that absolute value measures distance a number is from zero. If you remember that distance is always a positive number you will be just fine.

Key concepts to remember:

* the absolute value is the “distance” a number is from zero on the real number line
* distance is measured in positive units- therefore the absolute value of a number is always positive
* absolute values are common in algebraic expressions- so you need to really understand them

Evaluating an absolute value expression is when you calculate the value of the problem. Remember when you find the absolute value of a number the answer is always positive. However when absolute values are apart of a larger expression the overall value can be any real number- positive or negative.

Key concepts to remember:

* the absolute value is the “distance” a number is from zero on the real number line
* distance is measured in positive units- therefore the absolute value of a number is always positive
* absolute values are common in algebraic expressions- so you need to really understand them