Show:
addition
Multiplication
Division
Subtraction
100

4/14+7/14

11/14

100

14/23X20/23

280/23

100

12/5 2/2

6/2

100

12/23- 13/23

1/23

200

2/12+9/12=

11/12

200

10/10x 12/10= 

120/10

200

17/5÷ 3/5

51/5

200

19/91- 18/91

1/91

300

6/8+2/4

5/4

300

21/9x 19/9=

399/9

300

12/24÷ 6/24

2/24

300

17/21- 19/21

2/21

400

9/1+19/1=

28

400

200/20x 500/20

100,000/20

400

81/81÷ 9/81

9/81

400

10/12- 19/12

9/12

500

500/50+ 500/50

1,000/50

500

178/90x 800/90=

142,400/900

500

3/1 8/1

24/1

500

200/12- 136/12

64/12