Show:
Addition
Subtraction
Multiplication
Fractions of addition
Fractions of subtraction
100

20+20

40

100

1-2

-1

100

2x2

4

100

1/4+3/1

3/4

100

1/1-0/0

1/1

200
50+20

70

200

98-4

94

200

5x2

10

200

5/2+2/2

7/4

200

6/2-3/1

3/1

300

100+300

400

300

45-67

-22

300

7x2

14

300

10/20+10/20

20/40

300

8/1-1/1

7/0

400

142+142

284

400

83-29

54

400

8x23

184

400

12/13+11/14

23/27

400

12/10-4/2

8/8=1

500

738+283

1021

500

219-124

95

500

122x7

854

500

23/13+12/14

36/27

500

99/34-72/12

27/22