1. © 2007 M. Tallman

2. 15 1 1 + 5 1 5 1 5 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

3. © 2007 M. Tallman + = 4 1 6 1 6 1 12 1 1 1 1 1 1 1 1 1 1 1 1 1 1

4. © 2007 M. Tallman + 4 3 6 1 + 12 11 Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 4 1 4 1 4 1 6 1 1 12 1 1 1 1 1 1 1 1 1 1 3 3 × 9 = 2 2 × 2 = LCD: 12 1 12 1 1 1 1 1 1 1 1 1 1

5. © 2007 M. Tallman + 3 1 9 1 + 9 4 Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 3 3 × 9 3 = LCD: 9 3 1 9 1 9 1 9 1 9 1 9 1 9 1 9 1 9 1

6. © 2007 M. Tallman + 5 2 2 1 + 10 9 Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 2 2 × 10 4 = 5 5 × 5 = LCD: 10 5 1 5 1 2 1 10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

7. © 2007 M. Tallman + 2 1 6 1 + 6 4 Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 3 3 × 6 3 = LCD: 6 2 1 6 1 6 1 6 1 6 1 6 1 GCF: 2 2 2 ÷ 3 2 = 6 1 6 1 6 1 3 1 3 1

8. © 2007 M. Tallman 6 1 6 1 6 1 6 1 + 2 1 3 2 + 6 7 Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 3 3 × 6 3 = 2 2 × 6 4 = LCD: 6 3 1 3 1 2 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 1 6 1 = 1 Whole

9. © 2007 M. Tallman Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 4 6 3 + 12 9 GCF: 3 3 3 ÷ 4 3 = 1 3 3 × 12 3 = 2 2 × 6 = LCD: 12

10. © 2007 M. Tallman Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 3 7 2 + 21 13 1 7 7 × 21 7 = 3 3 × 6 = LCD: 21

11. © 2007 M. Tallman Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 9 3 1 + 9 7 4 3 3 × 9 3 = LCD: 9

12. © 2007 M. Tallman Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 8 6 3 + 24 15 GCF: 3 3 3 ÷ 8 5 = 1 3 3 × 24 3 = 4 4 × 12 = LCD: 24

13. © 2007 M. Tallman Step 1: Find the LCD of the fractions. Step 2: Rename the fractions using the LCD. Step 3: Add the numerators. Denominator remains. Step 4: Simplify, if necessary. 3 5 4 + 15 22 15 7 = 2 5 5 × 10 = 3 3 × 15 12 = LCD: 15 1