1000未満の3桁+2桁の足し算
810 + 43 = 489 + 83 = 259 + 91 = 220 + 88 = 670 + 47 = 651 + 81 = 571 + 40 = 275 + 17 = 366 + 81 = 135 + 70 = 124 + 39 = 695 + 71 = 330 + 64 = 365 + 65 = 678 + 49 = 484 + 55 = 800 + 46 = 593 + 36 = 399 + 72 = 908 + 89 = 593 + 36 = 429 + 16 = 353 + 91 = 672 + 23 = 675 + 23 = 451 + 19 = 309 + 41 = 255 + 96 = 512 + 56 = 816 + 63 = 643 + 91 = 434 + 71 = 518 + 29 = 563 + 25 = 392 + 34 = 271 + 88 = 493 + 52 = 600 + 21 = 217 + 89 = 639 + 84 = 261 + 56 = 158 + 31 = 363 + 73 = 125 + 88 = 148 + 81 = 491 + 25 = 956 + 20 = 127 + 12 = 181 + 53 = 300 + 24 =
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