Solution - Long subtraction
14,400
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 |
| 1 | 8 | 4 | 9 | 6 | |
| - | 4 | 0 | 9 | 6 | |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
6-6=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 8 | 4 | 9 | 6 | |
| - | 4 | 0 | 9 | 6 | |
| 0 |
Subtract the numbers in the tens column from the top number:
9-9=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 8 | 4 | 9 | 6 | |
| - | 4 | 0 | 9 | 6 | |
| 0 | 0 |
Subtract the numbers in the hundreds column from the top number:
4-0=4
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 8 | 4 | 9 | 6 | |
| - | 4 | 0 | 9 | 6 | |
| 4 | 0 | 0 |
Subtract the numbers in the thousands column from the top number:
8-4=4
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 8 | 4 | 9 | 6 | |
| - | 4 | 0 | 9 | 6 | |
| 4 | 4 | 0 | 0 |
Write 1 in the ten thousands place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 8 | 4 | 9 | 6 | |
| - | 4 | 0 | 9 | 6 | |
| 1 | 4 | 4 | 0 | 0 |
The solution is: 14,400
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