Show:
Adding 2 Digits
Subtracting 2 Digits
Adding 3 Digits
Subtracting 3 Digits
Subtracting 4 Digits
100

45 + 39 =

84

100

85 - 62=

23

100

235 + 323=

558

100

190 - 168 = 

22

100

4889 - 2629 =

2,260

200

84 + 48 =

132

200

99 - 44=

55

200

803 + 112=

915

200

245 - 212 = 

33

200

2455 - 1346 =

1,109

300

63 + 87 =

150

300

24 - 17=

7

300

345 + 438=

783

300

634 - 276 = 

358

300

3,972 - 1,789 =

2,183

400

17 + 46 =

63

400

53 - 27=

26

400

638 + 253=

891

400

874 - 537 = 

337

400

6,530 - 5,415=

1,115

500

79 + 15 =

94

500

92 - 47=

45

500

457+545=

1,002

500

904 - 486 = 

418

500

7,009 - 3,125 =

3,884