1000未満の3桁+2桁の足し算
690 + 70 = 594 + 17 = 483 + 44 = 540 + 55 = 880 + 86 = 610 + 63 = 245 + 49 = 735 + 33 = 193 + 67 = 478 + 65 = 238 + 57 = 198 + 75 = 940 + 45 = 264 + 90 = 284 + 28 = 311 + 45 = 152 + 11 = 479 + 40 = 339 + 58 = 241 + 31 = 946 + 49 = 481 + 97 = 352 + 52 = 748 + 75 = 346 + 81 = 112 + 66 = 283 + 31 = 539 + 45 = 677 + 62 = 580 + 98 = 238 + 54 = 127 + 21 = 206 + 32 = 271 + 53 = 154 + 73 = 503 + 52 = 656 + 44 = 812 + 81 = 423 + 33 = 222 + 41 = 429 + 18 = 283 + 20 = 627 + 66 = 532 + 25 = 463 + 17 = 139 + 95 = 230 + 87 = 607 + 51 = 593 + 16 = 281 + 19 =
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