1000未満の3桁+2桁の足し算
378 + 79 = 304 + 17 = 928 + 23 = 309 + 68 = 381 + 80 = 383 + 86 = 477 + 79 = 656 + 69 = 489 + 66 = 624 + 41 = 578 + 68 = 112 + 81 = 663 + 74 = 334 + 84 = 684 + 15 = 696 + 69 = 329 + 89 = 604 + 47 = 634 + 45 = 691 + 29 = 275 + 33 = 617 + 49 = 609 + 47 = 371 + 33 = 519 + 49 = 197 + 86 = 415 + 57 = 270 + 87 = 204 + 96 = 556 + 37 = 468 + 81 = 789 + 49 = 257 + 29 = 475 + 19 = 833 + 24 = 554 + 47 = 544 + 75 = 543 + 79 = 233 + 14 = 372 + 93 = 614 + 14 = 571 + 43 = 518 + 23 = 268 + 61 = 416 + 78 = 187 + 76 = 313 + 84 = 595 + 23 = 407 + 71 = 689 + 15 =
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