Show:
2 digit addition
3 digit addition
4 digit addition
2 digit subtraction
3 digit subtraction
10

45+21

66

10

523+341

864

10

9565+1234

10799

10

96-53

43

10

567-341

226

20

43+14

57

20

743+443

1186

20

3153+1133

4286

20

73-21

52

20

768-453

315

30

99+50

149

30

870+321

1191

30

4650+2051

6701

30

65-29

36

30

870-341

529

40

86+59

145

40

564+381

945

40

7456+4653

12109

40

83-65

18

40

564-381

183

50

97+38

135

50

932+789

1721

50

9676+5778

15454

50

50-38

12

50

900-767

133