Ответ:

Выполняем сложение и вычитание в каждом примере.

Первый столбецВторой столбецТретий столбец
420 − 38 = 382640 − 59 = 581850 − 62 = 788
740 − 65 = 675820 − 66 = 754530 − 81 = 449
510 − 34 = 476160 + 67 = 227130 + 99 = 229
720 − 61 = 659510 − 41 = 469580 + 36 = 616
830 − 65 = 765470 − 82 = 388830 − 58 = 772
130 + 88 = 218640 − 65 = 575970 − 93 = 877
490 + 16 = 506430 + 87 = 517850 − 78 = 772
760 − 89 = 671590 − 93 = 497290 + 31 = 321
150 + 63 = 213120 − 46 = 74350 + 69 = 419
210 − 37 = 173940 − 59 = 881580 + 37 = 617
620 − 28 = 592440 − 77 = 363610 − 44 = 566
420 − 36 = 384450 + 68 = 518340 − 42 = 298
740 − 65 = 675320 − 45 = 275260 + 56 = 316
150 + 87 = 237170 + 67 = 237550 − 99 = 451
320 + 95 = 415580 + 24 = 604610 − 27 = 583
190 + 62 = 252810 − 32 = 778870 − 82 = 788
330 + 84 = 414570 − 89 = 481490 + 26 = 516
660 − 73 = 587960 − 67 = 893370 + 59 = 429
690 + 18 = 708230 − 31 = 199190 + 25 = 215
480 + 43 = 523970 − 93 = 877710 − 52 = 658
670 − 86 = 584190 + 61 = 251180 + 79 = 259
780 + 36 = 816630 − 47 = 583170 + 65 = 235
610 − 45 = 565380 + 34 = 414290 + 32 = 322
310 + 91 = 401830 − 76 = 754920 − 46 = 874
690 + 12 = 702650 − 66 = 584360 − 67 = 293
340 + 77 = 417870 − 98 = 772240 − 75 = 165
860 − 83 = 777810 − 37 = 773270 − 89 = 181
250 − 61 = 189850 − 76 = 774810 − 53 = 757
570 + 49 = 619790 + 12 = 802970 − 83 = 887
540 − 64 = 476920 − 88 = 832280 + 49 = 329
190 + 23 = 213170 + 35 = 205770 + 47 = 817
730 − 47 = 683610 − 42 = 568320 − 68 = 252
270 + 68 = 338130 + 89 = 219460 − 94 = 366
470 − 86 = 384430 − 48 = 382920 − 35 = 885
750 − 69 = 681620 − 39 = 581450 + 77 = 527
720 − 84 = 636260 + 74 = 334530 − 65 = 465
170 + 75 = 245150 + 69 = 219430 + 87 = 517
240 + 73 = 313910 − 58 = 852660 + 55 = 715
380 + 48 = 428420 − 23 = 397720 − 46 = 674
450 − 62 = 388640 + 87 = 727290 + 38 = 328