Show:
addition
subtraction
multipacation
division
100

8+8+5

21

100

20-8

12

100

7x3

21

100

6/4

1.5

200

15+9

24

200

30-23

7

200

5x6

30

200

2/2

1

300

16+9+17

42

300

100-28

72

300

7x10

70

300

9/3

3

400

8+8+8

24

400

82-5

77

400

8x5

40

400

18/5

3.6

500

16+9+17

42

500

872-61

801

500

9x9

81

500

0/0

0