2. Example #1 Add the whole numbers, then add the fractions. Rewrite with a common denominator.

3. Example #2 Rewrite with a common denominator. Add the whole numbers, then add the fractions. When the fraction is improper, change it to a mixed number. Add the whole numbers.

4. Example #3 You can also add mixed numbers by changing them to improper fractions.

5. Example #4 Rewrite with a common denominator. Subtract the whole numbers, and subtract the fractional parts.

6. Example #5 You can also subtract mixed numbers by changing them to improper fractions.

7. Example #6 A triangle has sides of 1⅚ inches, 1⅓ inches, and 2½ inches. What is the perimeter of the triangle? The perimeter of the triangle is 5⅔ inches.