1000未満の3桁+2桁の足し算
574 + 38 = 476 + 44 = 166 + 38 = 593 + 12 = 485 + 38 = 181 + 95 = 509 + 78 = 580 + 37 = 448 + 15 = 519 + 30 = 780 + 81 = 348 + 42 = 658 + 93 = 481 + 31 = 972 + 22 = 580 + 74 = 808 + 81 = 286 + 89 = 472 + 54 = 134 + 70 = 324 + 52 = 531 + 59 = 592 + 44 = 121 + 94 = 386 + 64 = 132 + 55 = 656 + 66 = 254 + 76 = 257 + 20 = 157 + 26 = 112 + 57 = 551 + 77 = 343 + 33 = 342 + 29 = 300 + 45 = 883 + 16 = 281 + 72 = 600 + 92 = 137 + 42 = 141 + 80 = 562 + 69 = 322 + 84 = 657 + 21 = 723 + 38 = 422 + 79 = 329 + 87 = 288 + 29 = 899 + 89 = 863 + 36 = 521 + 69 =
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