Ответ:

402 − 130 = 272; 347 − 108 = 239; 902 − 554 = 348; 870 − 438 = 432; 306 + 654 = 960; 274 + 314 = 588; 540 + 263 = 803; 538 + 262 = 800; 209 · 3 = 627; 432 · 2 = 864; 194 · 4 = 776; 207 · 4 = 828; 806 : 2 = 403; 324 : 3 = 108; 128 : 4 = 32; 285 : 3 = 95.