Addition
256 + 256
512
256 - 198
58
15,697 + 14,708
30,405
14,987 - 8,934
6,053
2 x 7
14
409 + 67
476
498 - 276
222
16,987 + 14,098
31,085
15,987 - 456
15,531
3 x 6
18
598 + 489
1,087
501 - 387
114
17,091 + 14,523
31,614
16,576 - 45
16,531
4 x 4
16
699 + 254
953
734 - 276
458
18,104 + 17,215
35,319
17,893 - 17,000
893
7 x 7
49
799 + 865
1,664
809 - 709
100
19,998 + 14,231
34,229
18,345 - 8,454
9,891
9 x 9
81