Номер 485

198 + 250 = 448;
200 + 250 = 450;
450 – 2 = 448.

3640 + 87 = 3727;
3640 + 90 = 3730;
3730 – 3 = 3727.

3648 + 350 = 3998;
3650 + 350 = 4000;
4000 – 2 = 3998.

397 + 150 = 547;
400 + 150 = 550;
550 – 3 = 547.

2630 – 287 = 2343;
2630 – 300 = 2330;
2330 + 13 = 2343.

1648 – 350 = 1298;
1650 – 350 = 1300;
1300 – 2 = 1298.

269 + 2199 = 2468;
270 + 2200 = 2470;
2470 – 2 = 2468.

1269 – 199 = 1070;
1269 – 200 = 1069;
1069 + 1 = 1070.

1648 – 550 = 1098;
1650 – 550 = 1100;
1100 – 2 = 1098.