Overview: 1 questions will be solved this time.Among them
☆1 integer calculations
[1/1 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 123456789123456789*987654321987654321 Solution:
123456789123456789*987654321987654321 =
121932631356500531347203169112635269 Column vertical calculation:
| | | | | | | | | | | | | | | | | | | | | | | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
✖ | | | | | | | | | | | | | | | | | | | | | | | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
|
| | | | | | | | | | | | | | | | | | | | | | | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| | | | | | | | | | | | | | | | | | | | | | 2 | 4 | 6 | 9 | 1 | 3 | 5 | 7 | 8 | 2 | 4 | 6 | 9 | 1 | 3 | 5 | 7 | 8 | |
| | | | | | | | | | | | | | | | | | | | | 3 | 7 | 0 | 3 | 7 | 0 | 3 | 6 | 7 | 3 | 7 | 0 | 3 | 7 | 0 | 3 | 6 | 7 | | |
| | | | | | | | | | | | | | | | | | | | 4 | 9 | 3 | 8 | 2 | 7 | 1 | 5 | 6 | 4 | 9 | 3 | 8 | 2 | 7 | 1 | 5 | 6 | | | |
| | | | | | | | | | | | | | | | | | | 6 | 1 | 7 | 2 | 8 | 3 | 9 | 4 | 5 | 6 | 1 | 7 | 2 | 8 | 3 | 9 | 4 | 5 | | | | |
| | | | | | | | | | | | | | | | | | 7 | 4 | 0 | 7 | 4 | 0 | 7 | 3 | 4 | 7 | 4 | 0 | 7 | 4 | 0 | 7 | 3 | 4 | | | | | |
| | | | | | | | | | | | | | | | | 8 | 6 | 4 | 1 | 9 | 7 | 5 | 2 | 3 | 8 | 6 | 4 | 1 | 9 | 7 | 5 | 2 | 3 | | | | | | |
| | | | | | | | | | | | | | | | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 1 | 2 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 1 | 2 | | | | | | | |
| | | | | | | | | | | | | | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | | | | | | | | |
| | | | | | | | | | | | | | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | | | | | | | | | |
| | | | | | | | | | | | | 2 | 4 | 6 | 9 | 1 | 3 | 5 | 7 | 8 | 2 | 4 | 6 | 9 | 1 | 3 | 5 | 7 | 8 | | | | | | | | | | |
| | | | | | | | | | | | 3 | 7 | 0 | 3 | 7 | 0 | 3 | 6 | 7 | 3 | 7 | 0 | 3 | 7 | 0 | 3 | 6 | 7 | | | | | | | | | | | |
| | | | | | | | | | | 4 | 9 | 3 | 8 | 2 | 7 | 1 | 5 | 6 | 4 | 9 | 3 | 8 | 2 | 7 | 1 | 5 | 6 | | | | | | | | | | | | |
| | | | | | | | | | 6 | 1 | 7 | 2 | 8 | 3 | 9 | 4 | 5 | 6 | 1 | 7 | 2 | 8 | 3 | 9 | 4 | 5 | | | | | | | | | | | | | |
| | | | | | | | | 7 | 4 | 0 | 7 | 4 | 0 | 7 | 3 | 4 | 7 | 4 | 0 | 7 | 4 | 0 | 7 | 3 | 4 | | | | | | | | | | | | | | |
| | | | | | | | 8 | 6 | 4 | 1 | 9 | 7 | 5 | 2 | 3 | 8 | 6 | 4 | 1 | 9 | 7 | 5 | 2 | 3 | | | | | | | | | | | | | | | |
| | | | | | | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 1 | 2 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 1 | 2 | | | | | | | | | | | | | | | | |
| | | | | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | | | | | | | | | | | | | | | | | |
|
| | | | | 1 | 2 | 1 | 9 | 3 | 2 | 6 | 3 | 1 | 3 | 5 | 6 | 5 | 0 | 0 | 5 | 3 | 1 | 3 | 4 | 7 | 2 | 0 | 3 | 1 | 6 | 9 | 1 | 1 | 2 | 6 | 3 | 5 | 2 | 6 | 9 |
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