Group 1
Group 2
Group 3
Group 4
100

estimate : 5/6 + 7/12

1 1/2

100

Estimate : 5/12 + 7/8

1 1/2

100

Estimate : 4/5 - 3/8

1/2

100

Estimate : 4/10 + 3/5

1

200

5/6 - 2/3

1/6

200

3/12 + 5/8

21/24

200

2/8 + 3/6

9/12

200

9/10 - 1/4

13/20

300

4 7/8 - 3 5/6

1 1/24

300

7 7/9 - 4 1/2

3 5/18

300

8 2/5 + 4 4/7

12 34/20

300

2 2/6 + 2 1/4 + 3 1/3

7 11/12

400

8 - 6 4/7

1 1/5

400

9 - 4 2/7

4 5/7

400

11 - 3 4/9

7 5/9

400

10 - 1 2/5

8 3/5

500

5 1/6 - 3 7/12

1 7/12

500

6 2/3 - 1 7/8

4 19/24

500

4 1/5 -2 3/4

1 9/20

500

7 2/3 - 5 11/12

1 3/4

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