Show:
add
add 2 digit
subtract
subtract 2 digit
100

5+ 2=

7

100

10+10=

20

100

7-5=

2

100

22-11=

11

200

10 + 4=

14

200

34+23=

57

200

20-5=

15

200

69-46=

23

300

8+9 =

4+4=

17

8

300

57+33=

90

300

57-32=

25

300

57-39=

18