Show:
Add it up!
Take that back!
Let's Regroup!
Keep it Simple!
Mix it up!
100

2/3 + 1/4

11/12

100

3/4 - 1/6

7/12

100

2 3/4 +1 5/6

4 7/12

100

5 1/4−2 3/4

2 1/2

100

2 1/3 + 1 1/4

3 7/12


200

5/6 + 1/3

1

200

5/8 - 1/4

3/8

200

4 7/8 + 2 3/4

7 5/8

200

6 2/5 − 3 4/5


2 3/5

200

4 5/6 + 2 1/3

7 1/6

300

7/8 + 3/10

1 19/40 

300

9/10 - 2/5

1/2

300

3 5/9 + 2 7/9


6 1/3


300

8 1/6 − 4 5/6

3 1/3

300

5 1/2 - 2 3/4

2 3/4

400

4/5 + 2/15

14/15

400

11/12 - 5/6

1/12

400

6 11/12 + 3 5/6

10 3/4

400

7 3/10 − 2 9/10

4 2/5


400

6 2/5 - 3 4/5

2 3/5

500

7/14 + 2/7

11/14

500

7/10 - 4/10

3/10

500

5 1/4 − 2 3/4

2 1/2

500

9 4/7 − 5 6/7

3 5/7

500

5 5/6 - 2 2/3

3 1/6