Show:
Addition
Subtraction
Multiplication
Division
Fractions
100

12+8

2o

100

15-7

8

100

6x3

18

100

9/3

3

100

2/6+2/6

4/6

200

15+15

30

200

22-5

17

200

12x2

24

200

24/8

3

200

3/12+7/12

10/12

300

38+43

81

300

55-15

40

300

55x4

220

300

42/7

6

300

6/8-4/8

2/8

400

125+72

197

400

288-42

246

400

67x8

536

400

240/3

80

400

10/20-4/20

6/20

500

242+654

896

500

675-345

330

500

432x7

3,024

500

550/11

50

500

Change 15/4 to an improper fraction 

33/4