計算ピラミッド１ 答えを予想しよう。
１
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
２
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
３
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 |