Show:
addition
subtraction
multiplication
division
100

2/4 + 1/4

3/4

100

3/4 - 1/4

2/4

100

1/3 x 2/3

2/9

100

1/5 ÷ 3/8

23/40

200

6/9 + 2/9

8/9

200

4/5 - 2/5

2/5

200

5/6 x 2/6

5/18

200

2/4 ÷ 3/5

5/6


300

2/5 + 4/5

1 1/5 

300

5/6 - 2/3


1/6

300

1/2 x  3/4

3/8 

300

4/5 ÷ 2/6 

2 2/5

400

1/2 +5/4 

1 3/4

400

6/8 - 1/2

1/4

400

3/3 x 4/5 

12/15

400

7/8 ÷ 3/5 

1 11/24

500

1/5 + 3/8

40/23

500

1 1/4 - 6/8

1/2

500

4/9 x 6/7

24/63

500

3/7 ÷ 4/5

15/28