Show:
Adding with Common Denominators
Subtraction with Common Denominators
Adding with Uncommon Denominators
Subtracting with Uncommon Denominators
100

1/3 + 1/3

2/3
100

3/3 - 1/3

2/3

100

1/3 + 1/5

8/15
100

3/4 -1/2

1/4

200

1/16 + 2/16

3/16

200

4/5 - 2/5

2/5

200

6/9 + 3/10

29/30

200

5/6 - 3/4

1/12

300

15/26 + 11/26

26/26= 1

300

13/18 - 6/18

7/18

300

1/3 + 1//9

4/9

300

8/9 -2/3

2/9

400

2/5 + 2/5

4/5

400

7/7 - 5/7

2/7

400

7/10 + 1/8

33/40

400

4/20 - 1/3

2/15

500

11/24 + 13/24 + 15/24

39/24 = 1 15/24 = 1 5/8

500

24/25 - 7/24 - 2/24

15/24 = 5/8

500

2/9 +1/6 +1/3

13/18

500

9/10 - 2/10 - 1/5

1/2