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1. 1/2 + 1/3 = Answer: 5/6LCM = 6. So, 1/2 + 1/3 = 3/6 + 2/6 = 5/6.
2. 1/2 + 1/4 = Answer: 3/4LCM = 4. So, 1/2 + 1/4 = 2/4 + 1/4 = 3/4.
3. 1/2 + 1/5 = Answer: 7/10LCM = 10. So, 1/2 + 1/5 = 5/10 + 2/10 = 7/10.
4. 1/2 + 1/6 = Answer: 2/3LCM = 6. So, 1/2 + 1/6 = 3/6 + 1/6 = 4/6 = 2/3.
5. 1/2 + 1/7 = Answer: 9/14LCM = 14. So, 1/2 + 1/7 = 7/14 + 2/14 = 9/14.
6. 1/2 + 1/8 = Answer: 5/8LCM = 8. So, 1/2 + 1/8 = 4/8 + 1/8 = 5/8.
7. 1/2 + 1/9 = Answer: 11/18LCM = 18. So, 1/2 + 1/9 = 9/18 + 2/18 = 11/18.
8. 1/2 + 1/10 = Answer: 3/5LCM = 10. So, 1/2 + 1/10 = 5/10 + 1/10 = 6/10 = 3/5.
9. 1/2 + 1/11 = Answer: 13/22LCM = 22. So, 1/2 + 1/11 = 11/22 + 2/22 = 13/22.
10. 1/2 + 1/12 = Answer: 7/12LCM = 12. So, 1/2 + 1/12 = 6/12 + 1/12 = 7/12.
11. 1/3 + 1/3 = Answer: 2/3LCM = 3. So, 1/3 + 1/3 = 2/3.
12. 1/3 + 1/4 = Answer: 7/12LCM = 12. So, 1/3 + 1/4 = 4/12 + 3/12 = 7/12.
13. 1/3 + 1/5 = Answer: 8/15LCM = 15. So, 1/3 + 1/5 = 5/15 + 3/15 = 8/15.
14. 1/3 + 1/6 = Answer: 1/2LCM = 6. So, 1/3 + 1/6 = 2/6 + 1/6 = 3/6 = 1/2.
15. 1/3 + 1/7 = Answer: 10/21LCM = 21. So, 1/3 + 1/7 = 7/21 + 3/21 = 10/21.
16. 1/3 + 1/8 = Answer: 11/24LCM = 24. So, 1/3 + 1/8 = 8/24 + 3/24 = 11/24.
17. 1/3 + 1/9 = Answer: 4/9LCM = 9. So, 1/3 + 1/9 = 3/9 + 1/9 = 4/9.
18. 1/3 + 1/10 = Answer: 13/30LCM = 30. So, 1/3 + 1/10 = 10/30 + 3/30 = 13/30.
19. 1/3 + 1/11 = Answer: 14/33LCM = 33. So, 1/3 + 1/11 = 11/33 + 3/33 = 14/33.
20. 1/3 + 1/12 = Answer: 5/12LCM = 12. So, 1/3 + 1/12 = 4/12 + 1/12 = 5/12.
21. 1/4 + 1/4 = Answer: 1/2LCM = 4. So, 1/4 + 1/4 = 2/4 = 1/2.
22. 1/4 + 1/5 = Answer: 9/20LCM = 20. So, 1/4 + 1/5 = 5/20 + 4/20 = 9/20.
23. 1/4 + 1/6 = Answer: 5/12LCM = 12. So, 1/4 + 1/6 = 3/12 + 2/12 = 5/12.
24. 1/4 + 1/7 = Answer: 11/28LCM = 28. So, 1/4 + 1/7 = 7/28 + 4/28 = 11/28.
25. 1/4 + 1/8 = Answer: 3/8LCM = 8. So, 1/4 + 1/8 = 2/8 + 1/8 = 3/8.
26. 1/4 + 1/9 = Answer: 13/36LCM = 36. So, 1/4 + 1/9 = 9/36 + 4/36 = 13/36.
27. 1/4 + 1/10 = Answer: 7/20LCM = 20. So, 1/4 + 1/10 = 5/20 + 2/20 = 7/20.
28. 1/4 + 1/11 = Answer: 15/44LCM = 44. So, 1/4 + 1/11 = 11/44 + 4/44 = 15/44.
29. 1/4 + 1/12 = Answer: 1/3LCM = 12. So, 1/4 + 1/12 = 3/12 + 1/12 = 4/12 = 1/3.
30. 1/5 + 1/5 = Answer: 2/5LCM = 5. So, 1/5 + 1/5 = 2/5.
31. 1/5 + 1/6 = Answer: 11/30LCM = 30. So, 1/5 + 1/6 = 6/30 + 5/30 = 11/30.
32. 1/5 + 1/7 = Answer: 12/35LCM = 35. So, 1/5 + 1/7 = 7/35 + 5/35 = 12/35.
33. 1/5 + 1/8 = Answer: 13/40LCM = 40. So, 1/5 + 1/8 = 8/40 + 5/40 = 13/40.
34. 1/5 + 1/9 = Answer: 14/45LCM = 45. So, 1/5 + 1/9 = 9/45 + 5/45 = 14/45.
35. 1/5 + 1/10 = Answer: 3/10LCM = 10. So, 1/5 + 1/10 = 2/10 + 1/10 = 3/10.
36. 1/5 + 1/11 = Answer: 16/55LCM = 55. So, 1/5 + 1/11 = 11/55 + 5/55 = 16/55.
37. 1/5 + 1/12 = Answer: 17/60LCM = 60. So, 1/5 + 1/12 = 12/60 + 5/60 = 17/60.
38. 1/6 + 1/6 = Answer: 1/3LCM = 6. So, 1/6 + 1/6 = 2/6 = 1/3.
39. 1/6 + 1/7 = Answer: 13/42LCM = 42. So, 1/6 + 1/7 = 7/42 + 6/42 = 13/42.
40. 1/6 + 1/8 = Answer: 7/24LCM = 24. So, 1/6 + 1/8 = 4/24 + 3/24 = 7/24.
41. 1/6 + 1/9 = Answer: 5/18LCM = 18. So, 1/6 + 1/9 = 3/18 + 2/18 = 5/18.
42. 1/6 + 1/10 = Answer: 4/15LCM = 30. So, 1/6 + 1/10 = 5/30 + 3/30 = 8/30 = 4/15.
43. 1/6 + 1/11 = Answer: 17/66LCM = 66. So, 1/6 + 1/11 = 11/66 + 6/66 = 17/66.
44. 1/6 + 1/12 = Answer: 1/4LCM = 12. So, 1/6 + 1/12 = 2/12 + 1/12 = 3/12 = 1/4.
45. 1/7 + 1/7 = Answer: 2/7LCM = 7. So, 1/7 + 1/7 = 2/7.
46. 1/7 + 1/8 = Answer: 15/56LCM = 56. So, 1/7 + 1/8 = 8/56 + 7/56 = 15/56.
47. 1/7 + 1/9 = Answer: 16/63LCM = 63. So, 1/7 + 1/9 = 9/63 + 7/63 = 16/63.
48. 1/7 + 1/10 = Answer: 17/70LCM = 70. So, 1/7 + 1/10 = 10/70 + 7/70 = 17/70.
49. 1/7 + 1/11 = Answer: 18/77LCM = 77. So, 1/7 + 1/11 = 11/77 + 7/77 = 18/77.
50. 1/7 + 1/12 = Answer: 19/84LCM = 84. So, 1/7 + 1/12 = 12/84 + 7/84 = 19/84.
51. 1/8 + 1/8 = Answer: 1/4LCM = 8. So, 1/8 + 1/8 = 2/8 = 1/4.
52. 1/8 + 1/9 = Answer: 17/72LCM = 72. So, 1/8 + 1/9 = 9/72 + 8/72 = 17/72.
53. 1/8 + 1/10 = Answer: 9/40LCM = 40. So, 1/8 + 1/10 = 5/40 + 4/40 = 9/40.
54. 1/8 + 1/11 = Answer: 19/88LCM = 88. So, 1/8 + 1/11 = 11/88 + 8/88 = 19/88.
55. 1/8 + 1/12 = Answer: 5/24LCM = 24. So, 1/8 + 1/12 = 3/24 + 2/24 = 5/24.
56. 1/9 + 1/9 = Answer: 2/9LCM = 9. So, 1/9 + 1/9 = 2/9.
57. 1/9 + 1/10 = Answer: 19/90LCM = 90. So, 1/9 + 1/10 = 10/90 + 9/90 = 19/90.
58. 1/9 + 1/11 = Answer: 20/99LCM = 99. So, 1/9 + 1/11 = 11/99 + 9/99 = 20/99.
Try the Quiz : Arithmetic Homework Help : Addition of Fractions I
