Show:
Addition
Subtraction
Dividing
Multiplying
Reducing
100

 3/8 + 2/8=

5/8

100

6/7 - 5/7 =

1/7

100

3/4 ÷ 1/3  

9/4

100

6/10 x 1/2

6/20

100

4/8

1/2

200

3/7 + 3/7 =

6/7

200

10/23 - 7/23 =

3/23

200

3/8 ÷ 1/4

12/8

200

5/11 x 6/9

30/99

200

4/12

1/3

300

5/10 + 5/10 =

10/10 or 1

300

5/4 - 1/4 = 

4/4 or 1

300

3/4 ÷ 9/8

24/36

300

7/8 x 6/9

42/72

300

4/2

2

400

1/2 + 1/4 = 

3/4 

400

30/22 - 10/11

10/22 or 5/11

400

6/7 ÷ 7/8

48/49

400

8/9 x 12/11

96/99

400

67/7

9 4/7

500

5/9 + 1/3

8/9

500

26/12 - 6/3 = 

2/12 or 1/6

500

9/10 ÷ 10/12

108/100

500

12/12 x 9/12

108/144

500

89/9

9 8/9