21⋅7
Multiply 7 by 1. Place the result in the next column in the result line. There is one result line for each digit in 7.
| 2 | 1 | |
| ⨯ | 7 | |
| 7 |
Multiply 7 by 2. Place the ones digit (4) in the result line and carry the tens digit (1). There is one result line for each digit in 7.
| 2 | 1 | |
| ⨯ | 7 | |
| 1 | 4 | 7 |
Add the numbers in each column. In this case, add 7, then place the 7 in the result line.
| 2 | 1 | |
| ⨯ | 7 | |
| 1 | 4 | 7 |
| 7 |
Add the numbers in each column. In this case, add 4, then place the 4 in the result line.
| 2 | 1 | |
| ⨯ | 7 | |
| 1 | 4 | 7 |
| 4 | 7 |
Add the numbers in each column. In this case, add 1, then place the 1 in the result line.
| 2 | 1 | |
| ⨯ | 7 | |
| 1 | 4 | 7 |
| 1 | 4 | 7 |
| 2 | 1 | |
| ⨯ | 7 | |
| 1 | 4 | 7 |
| 1 | 4 | 7 |
The result of 21⋅7 is 147.
147
Multiply 21*7
