1. Fractions: Adding Like Denominators
By Monica Yuskaitis

2. 3 4 Parts of a Fraction = the number of parts
= the total number of parts that equal a whole

3. Parts of a Fraction 3
= numerator 4
= denominator

4. Adding Like Denominators
Only add the numerators
1/4
1/4 3 1 4 + = 4 4 4
1/4
1/4

5. Simplify Your Answer 4 1 = 4

6. Add these fractions
1/5
1/5 3 1 4 + =
1/5 5 5 5
1/5

7. Add these fractions
1/4
1/4 2 1 3 + = 4 4 4
1/4

8. Add these fractions 1 1 1 6 6 6 3 2 5 + = 6 6 6 1 1 6 6

9. Add these fractions 1 1 1 6 6 6 2 2 4 + = 6 6 6 1 6

10. Simplify Your Answer 4 2 2 ÷ = 6 2 3

11. Add these fractions 5 3 8 + = 12 12 12

12. Simplify Your Answer 8 4 2 ÷ = 12 4 3

13. Add these fractions 1 3 4 + = 10 10 10

14. Simplify Your Answer 4 2 2 ÷ = 10 2 5

15. Add these fractions 4 3 7 + = 4 4 9 9 9

16. Add these fractions 3 1 4 + = 5 5 8 8 8

17. Simplify Your Answer 4 4 1 5 ÷ 5 = 8 4 2

18. Add these fractions 2 1 3 + 4 3 = 7 9 9 9

19. Simplify Your Answer 3 3 1 7 ÷ 7 = 9 3 3