Show:
adding
subtracting
mixed
adding
subtracting
100

3 1/5 + 2 1/5

What is 5 2/5

100
6 4/5 - 5 3/5
What is 1 1/5
100
3 + 3 5/6
What is 6 5/6
100

2 1/3 + 1 1/3

What is 3 2/3

100

2 3/5 - 1 1/5

What is 1 2/5

200
4 3/8 + 6 4/8
What is 10 7/8
200

8 2/3 - 4 1/3

What is 4 1/3

200
10 5/6 - 4 2/6
What is 6 1/2
200

8 1/4 + 1 1/4

What is 9 2/4

200

2 3/4 - 2 1/4

What is 2/4

300
6 1/4 + 6 1/4
What is 12 1/2
300

8 5/6 - 3 5/6

What is 5

300
2 2/9 + 3 3/9
What is 5 5/9
300

2 4/9 + 1 2/9

What is 4 6/9

300

7 8/9 - 5 2/9

What is 2 6/9

400
10 1/4 + 5 2/4
What is 15 3/4
400
20 5/10 - 9 2/10
What is 11 3/10
400
4 + 1/2
What is4 1/2
400

3 1/5 + 2 3/5

What is 6 4/5

400

8 7/10 - 5 3/10

What is 3 4/10

500
3 1/3 + 5 2/3
What is 9
500
13 1/5 - 1/5
What is 13
500
15 5/7 - 3 3/7
What is 12 2/7
500

4 3/8 + 9 4/8

What is 14 7/8

500

15 9/10 - 7 3/10

What is 8 6/10