Operations with Positive and Negative Fractions
Every fraction has three signs: the sign of the number in the numerator, the sign of the number in the denominator, and the sign in front of the fraction (called the sign of the fraction). For example,
When a fraction is negative, such as 
the negative sign can be placed in the numerator or denominator. For example,
When performing operations with fractions that are negative, keep the negative sign with the numerator of the fraction and perform the operations .
Examples
Example 1
Add 
Solution 1
Example 2
Subtract 
Solution 2
Example 3
Multiply 
Solution 3
Example 4
Divide 
Solution 4
Operations with Positive and Negative Fractions Practice Problems
Practice
Perform the following indicated operations:
1. 
2. 
3. 
4. 
5. 
Answers
1. 
2. 
3. 
4. 
5. 
Practice problems for these concepts can be found at: More Advanced Fractions Practice Test.
Excerpted From:
From Pre-Algebra Demystified: A Self-Teaching Guide. Copyright © 2004 by The McGraw-Hill Companies, Inc. All Rights Reserved.
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