1. © 2010 Pearson Prentice Hall. All rights reserved Adding and Subtracting Mixed Numbers and the Order of Operations § 2.8

2. Tobey & Slater, Basic College Mathematics, 6e2 Adding Mixed Numbers When adding mixed numbers, it is best to add the fractions together and then add the whole numbers together. Example: Add LCD = 6 Add the fractions first. Add the whole numbers.

3. Tobey & Slater, Basic College Mathematics, 6e3 Subtracting Mixed Numbers Subtracting mixed numbers is like adding mixed numbers. Example: Add LCD = 24 Subtract the fractions first. Subtract the whole numbers.

4. Tobey & Slater, Basic College Mathematics, 6e4 Subtracting Mixed Numbers Example: Add LCD = 36

5. Tobey & Slater, Basic College Mathematics, 6e5 Order of Operations 1.Perform operations inside any parentheses. 2.Simplify any expressions with exponents. 3.Multiply or divide from left to right. 4.Add or subtract from left to right. Do first Do last Example: Evaluate Exponents Multiplication

6. Tobey & Slater, Basic College Mathematics, 6e6 Order of Operations Example: Evaluate Express division as multiplication. Multiply. Rewrite fractions using the LCD. Add and simplify.