Show:
2 digit addition no regrouping
2 digit addition with regrouping
3 digit addition no regrouping
3 digit addition with regrouping
random digit addition
100

22+22=

44

100
28+17=

45

100

321+321=

642

100

657+324=

981

100

7+13=

20

200

24+35=

59

200

36+47=

83

200

358+641=

999

200

924+295=

1,219

200

990+13

1,003

300
13+82=
95
300

58+33=

91

300

424+353=

777

300

488+388=

876

300
888+88=

976

400

45+54

99
400

87+97=

184

400

533+464=

997

400

869+743

1,612

400

561+633=

1,194

500

73+85=

158

500

99+38=

137

500

624+331=

955

500

999+999=

1,998

500

24+24+24

72