Show:
addition
subtraction
multiplication
division
100

1/2 + 2/4 =

1

100

4/5 - 2/3 =

2/15

100

2/3 x 4/5 =

8/15

100

2/3 รท 4/5 =

5/6

200

10/5 + 2/5 =

2 2/5

200

5/10 - 3/6 =

1/2

200

5/10 x 3/6 =

1/4

300

3/4 + 5/10 =

1 1/4

300

8/10 - 4/6 =

2/15

300

5/6 x 4/6 =

5/9

400

6/9 + 4/5 =

1 7/15

400

6/7 - 4/5 =

2/35

400

4/7 x 3/8 =

3/14

500

200/10 + 50/2 =

45

500

6/4 - 5/9 =

17/18

500

8/9 x 12 =

10 2/3