Adding 3 Fractions Worksheets - 15 Worksheets Library - Free Printable

I'll solve each problem step by step, adding the three fractions with the same denominators.

Let me work through all 16 problems:

Problem 1: 5/8 + 2/8 + 7/8
- Add numerators: 5 + 2 + 7 = 14
- Keep denominator: 8
- Result: 14/8 = 7/4 (simplified)

Problem 2: 7/12 + 4/12 + 8/12
- Add numerators: 7 + 4 + 8 = 19
- Keep denominator: 12
- Result: 19/12

Problem 3: 2/10 + 7/10 + 5/10
- Add numerators: 2 + 7 + 5 = 14
- Keep denominator: 10
- Result: 14/10 = 7/5 (simplified)

Problem 4: 12/15 + 9/15 + 12/15
- Add numerators: 12 + 9 + 12 = 33
- Keep denominator: 15
- Result: 33/15 = 11/5 (simplified)

Problem 5: 1/7 + 2/7 + 6/7
- Add numerators: 1 + 2 + 6 = 9
- Keep denominator: 7
- Result: 9/7

Problem 6: 7/12 + 10/12 + 12/12
- Add numerators: 7 + 10 + 12 = 29
- Keep denominator: 12
- Result: 29/12

Problem 7: 15/20 + 12/20 + 17/20
- Add numerators: 15 + 12 + 17 = 44
- Keep denominator: 20
- Result: 44/20 = 11/5 (simplified)

Problem 8: 10/17 + 9/17 + 12/17
- Add numerators: 10 + 9 + 12 = 31
- Keep denominator: 17
- Result: 31/17

Problem 9: 4/9 + 2/9 + 5/9
- Add numerators: 4 + 2 + 5 = 11
- Keep denominator: 9
- Result: 11/9

Problem 10: 12/14 + 9/14 + 10/14
- Add numerators: 12 + 9 + 10 = 31
- Keep denominator: 14
- Result: 31/14

Problem 11: 1/8 + 3/8 + 5/8
- Add numerators: 1 + 3 + 5 = 9
- Keep denominator: 8
- Result: 9/8

Problem 12: 10/12 + 7/12 + 9/12
- Add numerators: 10 + 7 + 9 = 26
- Keep denominator: 12
- Result: 26/12 = 13/6 (simplified)

Problem 13: 2/10 + 8/10 + 4/10
- Add numerators: 2 + 8 + 4 = 14
- Keep denominator: 10
- Result: 14/10 = 7/5 (simplified)

Problem 14: 2/5 + 3/5 + 1/5
- Add numerators: 2 + 3 + 1 = 6
- Keep denominator: 5
- Result: 6/5

Problem 15: 12/21 + 10/21 + 15/21
- Add numerators: 12 + 10 + 15 = 37
- Keep denominator: 21
- Result: 37/21

Problem 16: 11/18 + 7/18 + 5/18
- Add numerators: 11 + 7 + 5 = 23
- Keep denominator: 18
- Result: 23/18

Final Answer:
1. 7/4
2. 19/12
3. 7/5
4. 11/5
5. 9/7
6. 29/12
7. 11/5
8. 31/17
9. 11/9
10. 31/14
11. 9/8
12. 13/6
13. 7/5
14. 6/5
15. 37/21
16. 23/18