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1 × 8 ＋ 1 = 9 12 × 8 ＋ 2 = 98 123 × 8 ＋ 3 = 987 1234 × 8 ＋ 4 = 9876 12345 × 8 ＋ 5 = 98765 123456 × 8 ＋ 6 = 987654 1234567 × 8 ＋ 7 = 9876543 12345678 × 8 ＋ 8 = 98765432 123456789 × 8 ＋ 9 = 987654321 1 × 9 ＋ 2 = 11 12 × 9 ＋ 3 = 111 123 × 9 ＋ 4 = 1111 1234 × 9 ＋ 5 = 11111 12345 × 9 ＋ 6 = 111111 123456 × 9 ＋ 7 = 1111111 1234567 × 9 ＋ 8 = 11111111 12345678 × 9 ＋ 9 = 111111111 123456789 × 9 ＋ 10 = 1111111111 1 × 1 = 1 11 × 11 = 121 111 × 111 = 12321 1111 × 1111 = 1234321 11111 × 11111 = 123454321 111111 × 111111 = 12345654321 1111111 × 1111111 = 1234567654321 11111111 × 11111111 = 123456787654321 111111111 × 111111111 = 12345678987654321 9 × 9 ＋ 7 = 88 98 × 9 ＋ 6 = 888 987 × 9 ＋ 5 = 8888 9876 × 9 ＋ 4 = 88888 98765 × 9 ＋ 3 = 888888 987654 × 9 ＋ 2 = 8888888 9876543 × 9 ＋ 1 = 88888888 98765432 × 9 ＋ 0 = 888888888 12345679 × 9 (9×1) = 111111111 12345679 × 18 (9×2) = 222222222 12345679 × 27 (9×3) = 333333333 12345679 × 36 (9×4) = 444444444 12345679 × 45 (9×5) = 555555555 12345679 × 54 (9×6) = 666666666 12345679 × 63 (9×7) = 777777777 12345679 × 72 (9×8) = 888888888 12345679 × 81 (9×9) = 999999999 9 × 1 = 9 | 9 ＋ 0 = 0 9 × 2 = 18 | 1 ＋ 8 = 9 9 × 3 = 27 | 2 ＋ 7 = 9 9 × 4 = 36 | 3 ＋ 6 = 9 9 × 5 = 45 | 4 ＋ 5 = 9 9 × 6 = 54 | 5 ＋ 4 = 9 9 × 7 = 63 | 6 ＋ 3 = 9 9 × 8 = 72 | 7 ＋ 2 = 9 9 × 9 = 81 | 8 ＋ 1 = 9 9 × 10 = 90 | 9 ＋ 0 = 9 1 = 1^2 1 + 3 = 4 = 2^2 1 + 3 + 5 = 9 = 3^2 1 + 3 + 5 + 7 = 16 = 4^2 1 + 3 + 5 + 7 + 9 = 25 = 5^2 1 + 3 + 5 + 7 + 9 + 11 = 36 = 6^2 1 + 3 + 5 + 7 + 9 + 11 + 13 = 49 = 7^2 142857·1 = 142857 142857·2 = 285714 142857·3 = 428571 142857·4 = 571428 142857·5 = 714285 142857·6 = 857142 142 + 857 = 999 285 + 714 = 999 428 + 571 = 999 571 + 428 = 999 714 + 285 = 999 857 + 142 = 999 14 + 28 + 57 = 99 28 + 57 + 14 = 99 42 + 85 + 71 = 99 + 99 57 + 14 + 28 = 99 71 + 42 + 85 = 99 + 99 85 + 71 + 42 = 99 + 99 1·7 + 3 = 10 14·7 + 2 = 100 142·7 + 6 = 1000 1428·7 + 4 = 10000 14285·7 + 5 = 100000 142857·7 + 1 = 1000000 1428571·7 + 3 = 10000000 14285714·7 + 2 = 100000000 142857142·7 + 6 = 1000000000 1428571428·7 + 4 = 10000000000 14285714285·7 + 5 = 100000000000 142857142857·7 + 1 = 1000000000000 1428571428571·7 + 3 = 10000000000000 14285714285714·7 + 2 = 100000000000000 142857142857142·7 + 6 = 1000000000000000 1428571428571428·7 + 4 = 10000000000000000 14285714285714285·7 + 5 = 100000000000000000 142857142857142857·7 + 1 = 1000000000000000000 3 2 6 + 4 5 1 = 7 7 7 2 6 4 + 5 1 3 = 7 7 7 6 4 5 + 1 3 2 = 7 7 7 + + + + + + 4 5 1 + 3 2 6 = 7 7 7 5 1 3 + 2 6 4 = 7 7 7 1 3 2 + 6 4 5 = 7 7 7 3 2 6 + 4 5 1 = 7 7 7 2 6 4 + 5 1 3 = 7 7 7 6 4 5 + 1 3 2 = 7 7 7 + + + + + + 4 5 1 + 3 2 6 = 7 7 7 5 1 3 + 2 6 4 = 7 7 7 1 3 2 + 6 4 5 = 7 7 7 = = = = 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 12345679×12=148148148 12345679×15=185185185 12345679×57=703703703 12345679×10＝123456790 lose 8 12345679×11＝135802469 lose 7 12345679×13＝160493827 lose 5 12345679×14＝172839506 lose 4 12345679×16＝197530864 lose 2 12345679×17＝209876543 lose 1 12345679×243＝2999999997 2+7=9 12345679×28＝345679012 12345679×37＝456790123 |
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