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1 digit addition
2 digit addition
3 digit addition
4 digit addition
100
1 + 3
5
100
10 + 15
25
100
111 + 304
415
100
1000 + 2010
3010
200
5 + 3
8
200
33 + 27
60
200
324 + 509
833
200
2349 + 3118
5467
300
6 + 5
11
300
87 + 25
112
300
569 + 371
940
300
6245 + 1674
7919
400
9 + 8
17
400
67 + 77
144
400
597 + 634
1231
400
7899 + 5367
13,266