Solution - Long subtraction
41,000
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 |
| 7 | 9 | 1 | 0 | 9 | |
| - | 3 | 8 | 1 | 0 | 9 |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
9-9=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 9 | 1 | 0 | 9 | |
| - | 3 | 8 | 1 | 0 | 9 |
| 0 |
Subtract the numbers in the tens column from the top number:
0-0=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 9 | 1 | 0 | 9 | |
| - | 3 | 8 | 1 | 0 | 9 |
| 0 | 0 |
Subtract the numbers in the hundreds column from the top number:
1-1=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 9 | 1 | 0 | 9 | |
| - | 3 | 8 | 1 | 0 | 9 |
| 0 | 0 | 0 |
Subtract the numbers in the thousands column from the top number:
9-8=1
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 9 | 1 | 0 | 9 | |
| - | 3 | 8 | 1 | 0 | 9 |
| 1 | 0 | 0 | 0 |
Subtract the numbers in the ten thousands column from the top number:
7-3=4
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 9 | 1 | 0 | 9 | |
| - | 3 | 8 | 1 | 0 | 9 |
| 4 | 1 | 0 | 0 | 0 |
The solution is: 41,000
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