Show:
Addition - No Regrouping
Subtraction - No Regrouping
Addition - With Regrouping
Subtraction - With Regrouping
100

23 + 32 =

55

100

89 - 21 =

68

100

95 + 29 =

124

100

67 - 39 =

48

200

47 + 31 =

78

200

54 - 32 =

22

200

65 + 78 =

144

200

43 - 27 =

16

300

345 + 22

367

300

546 - 325 =

221

300

342 + 268 =

610

300

291 - 173 =

118

400

473 + 203 =

676

400

895 - 342 =

553

400

568 + 439 = 

1,007

400

344 - 257 =

87

500

1,408 + 1,291 =

2,699 

500

2,349 - 1,220 =

1,120

500

2,437 + 1,343 =

3,780

500

1,232 - 1,125 =

107