Show:
Multiplication
Division
Addition
Subtraction
Hard problems
100

5/6 X 3/5

1/2 or 0.5

100

1/3 / 1/3

1

100

1/5 + 1/5

2/5

100

2/3 - 1/3

1/3

100

9/17 - 3/15

28/85

200

5/8 X 6/7

15/28

200

1/3 / 5/6

2/5

200

5/7+1/7

6/7

200

4/5 - 2/10

6/10

200

5/16 X 17/27

85/432

300

17/25 X 1/5

17/125

300

5/7 / 2/5

1 11/14

300

7/16 + 5/16

12/16

300

5/28 - 1/7

1/28

300

2/28 / 45/28

2/45

400

13/14 X 5/7

65/98

400

7/12 / 6/2

7/36

400

4/6 + 1/3

6/6

400

4/10 - 1/5 

1/5 or 2/10

400

5/27 + 16/45 

73/135

500

16/27 X 7/35

16/135

500

12/15 / 12/3

1/5

500

5/8 + 5/17

125/136

500

5/22 - 16/32

3/11

500

56/2 X 13/123

2 118/123