Subtracting with Like Denominators
Adding with
Like Denominators
Adding Unlike Denominators
Adding Unlike Denominators Hard
Subtracting Unlike Denominators
100

4/5 - 3/5 =

1/5

100
1/2 + 1/2 =
2/2
100

1/4 + 2/6 = 

14/24

100
3/5 + 1/7 =
26/35
100

2/6 - 1/4 = 

1/12

200

10/15 - 4/15 =

6/15

200
1/4 + 2/4 =
3/4
200
1/1 + 1/6 =
7/6
200
2/4 + 3/9 =
30/36
200

1/1 - 1/6 = 

5/6

300

5/6 - 3/6 =

2/6 (or 1/3)

300
1/5 + 3/5 =
4/5
300
2/5 + 1/6 =
17/30
300
5/10 + 1/3 =
25/30
300

2/5 - 1/6 =

7/30

400

12/17 - 5/17 = 

8/15

400
6/12 + 4/12 =
10/12
400
3/5 + 1/8 =
29/40
400
1/8 + 3/5 =
29/40
400

3/5 - 1/8 = 

19/40

500

2/3 - 1/3 = 

1/3

500
10/25 + 13/25 =
23/25
500
1/5 + 1/4 =
9/20
500
8/12 + 1/20 =
172/240
500

1/4 - 1/5 = 

1/20

M
e
n
u