Join Karin Hutchinson for an indepth discussion in this video Absolute value, part of Foundations of Algebra: PreAlgebra.
 Now that you know how to add integers with the same sign,…let's learn how to add integers with different signs.…In order to understand this new rule, we must first…understand absolute value.…So what is absolute value?…Absolute value is the distance between the number…and 0 on the number line.…It is written like this.…A number, with a bar on each side.…This is the notation that represents absolute value.…Let's take a look at how we evaluate…absolute value.…
Let's use our definition of the absolute value…to evaluate the absolute value of 6.…Remember, absolute value means that we…want to know the distance between the number…and zero on the number line.…So using our number line, how far is six…away from zero?…We see that 6 is exactly…six units away from 0.…So the absolute value of 6 is 6.…In our next problem we're going to…evaluate the absolute value of 6.…
So how many units away from 0 is 6?…Well, 6 is exactly six units…away from 0.…So the absolute value of 6 is positive six.…So my question is, can absolute value…
Author
Karin HutchinsonReleased
8/4/2015This course includes practice challenges and worksheets, as well as tips for educators who are helping students master prealgebra for Common Core. Karin Hutchinson also helps you evaluate, write, and simplify expressions, and solve word problems and complex algebraic expressions.
 Adding integers
 Subtracting
 Multiplying and dividing
 Understanding the order of operations
 Evaluating expressions
 Breaking down word problems and algebraic expressions
 Distributing positive and negative numbers
 Simplifying expressions
Skill Level Appropriate for all
Duration
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Introduction

Welcome1m 7s


1. Adding Integers

Introduction to integers4m 1s

Absolute value2m 50s

Solution: Add integers4m 19s


2. Subtracting Integers

Solution: Subtract integers4m 10s

3. Multiplying and Dividing Integers

4. Order of Operations

5. Evaluating Expressions

6. Word Problems and Algebraic Expressions

More realworld problems4m 35s

7. The Distributive Property

8. Simplifying Expressions

Introduction to like terms3m 13s

Combining like terms6m 6s


Conclusion

Next steps40s

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Video: Absolute value