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: 11*909090909090909091 Solution:
11*909090909090909091 =
10000000000000000001 Column vertical calculation:
| | | | | | | | | | | | | | | | | | | | | | | 1 | 1 |
✖ | | | | | | | 9 | 0 | 9 | 0 | 9 | 0 | 9 | 0 | 9 | 0 | 9 | 0 | 9 | 0 | 9 | 0 | 9 | 1 |
|
| | | | | | | | | | | | | | | | | | | | | | | 1 | 1 |
| | | | | | | | | | | | | | | | | | | | | | 9 | 9 | |
| | | | | | | | | | | | | | | | | | | | | 0 | 0 | | |
| | | | | | | | | | | | | | | | | | | | 9 | 9 | | | |
| | | | | | | | | | | | | | | | | | | 0 | 0 | | | | |
| | | | | | | | | | | | | | | | | | 9 | 9 | | | | | |
| | | | | | | | | | | | | | | | | 0 | 0 | | | | | | |
| | | | | | | | | | | | | | | | 9 | 9 | | | | | | | |
| | | | | | | | | | | | | | | 0 | 0 | | | | | | | | |
| | | | | | | | | | | | | | 9 | 9 | | | | | | | | | |
| | | | | | | | | | | | | 0 | 0 | | | | | | | | | | |
| | | | | | | | | | | | 9 | 9 | | | | | | | | | | | |
| | | | | | | | | | | 0 | 0 | | | | | | | | | | | | |
| | | | | | | | | | 9 | 9 | | | | | | | | | | | | | |
| | | | | | | | | 0 | 0 | | | | | | | | | | | | | | |
| | | | | | | | 9 | 9 | | | | | | | | | | | | | | | |
| | | | | | | 0 | 0 | | | | | | | | | | | | | | | | |
| | | | | | 9 | 9 | | | | | | | | | | | | | | | | | |
|
| | | | | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
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