Solution - Long subtraction
91,221
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 9 | 1 | 3 | 2 | 1 | |
| - | 1 | 0 | 0 | ||
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
1-0=1
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 9 | 1 | 3 | 2 | 1 | |
| - | 1 | 0 | 0 | ||
| 1 |
Subtract the numbers in the tens column from the top number:
2-0=2
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 9 | 1 | 3 | 2 | 1 | |
| - | 1 | 0 | 0 | ||
| 2 | 1 |
Subtract the numbers in the hundreds column from the top number:
3-1=2
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 9 | 1 | 3 | 2 | 1 | |
| - | 1 | 0 | 0 | ||
| 2 | 2 | 1 |
Write 1 in the thousands place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 9 | 1 | 3 | 2 | 1 | |
| - | 1 | 0 | 0 | ||
| 1 | 2 | 2 | 1 |
Write 9 in the ten thousands place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 9 | 1 | 3 | 2 | 1 | |
| - | 1 | 0 | 0 | ||
| 9 | 1 | 2 | 2 | 1 |
The solution is: 91,221
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