Show:
addition
subtraction
big addition
big subtraction
100

5+6

11

100

5-1

4

100

32+12

44

100

56-32

24

200

8+7

15

200

8-7

1

200

21+21

42

200

90-30

60

300

6+9

15

300

9-2

7

300

12+37

49

300

34-28

6

400

5+3

8

400

10-5

5

400

34+18

52

400

48-24

24

500

9+9

18

500

9-3

6

500

23+41

64

500

68-30

38