Adding:
Like Denominators
Adding:
Unlike Denominators
Subtracting:
Like Denominators
Subtracting:
Unlike Denominators
Miscellaneous
100
2/6 + 3/6 =
5/6
100
3/6 + 1/3 =
5/6
100
5/7 - 2/7 =
3/7
100
7/10 - 2/9 =
43/90
100
2/7 + 1/3 =
13/21
200
2/5 + 1/5 =
3/5
200
2/9 + 1/4
17/36
200
5/3 - 3/8 =
2/8 = 1/4
200
1/3 - 1/5 =
2/15
200
4/5 + 3/4 =
31/20 or 1 and 11/20
300
2/8 + 4/8 =
6/8 = 3/4
300
2/8 + 2/6 =
14/24 = 7/12
300
7/10 - 3/10
4/10 = 2/5
300
2/5 + 1/4 =
3/20
300
3 and 3/7 + 2 and 1/7 =
5 and 4/7
400
5/12 + 4/12 =
9/12 = 3/4
400
2/7 + 1/5
17/35
400
14/15 - 5/15
9/15 = 3/5
400
8/9 - 4/8 =
28/72 = 7/18
400
4 and 3/8 + 1 and 7/8 =
5 and 10/8 or 6 and 2/8
500
3/10 + 5/10 =
8/10 = 4/5
500
2/6 + 5/10 =
25/30 = 5/6
500
8/12 - 5/12 =
3/12 = 1/4
500
4/6 - 4/8 =
4/24 = 1/6
500
7/8 + 3/9 =
87/72 or 1 and 15/72
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