Adding 3-digit numbers
100 + 100 =
200
1,000 + 1,000 =
2000
100 - 100 =
0
1,000 - 1,000 =
0
250 + 350 =
600
2,230 + 678 =
2,908
230 - 150 =
80
2,645 - 672 =
1,973
468 + 354 =
822
3,438 + 654 =
4,092
379 - 156 =
223
3,876 - 823 =
3,053
589 + 258 =
847
4,690 + 952 =
5,642
566 - 432 =
134
4,562 - 999 =
3,563
974 + 539 =
1,513
5,642 + 1,000 =
6, 642
984 - 388 =
596
6,789 - 934 =
5,855