Solution - Long subtraction
7,700
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 8 | 0 | 0 | 0 | |
| - | 3 | 0 | 0 | |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
0-0=0
| Place value | thousands | hundreds | tens | ones |
| 8 | 0 | 0 | 0 | |
| - | 3 | 0 | 0 | |
| 0 |
Subtract the numbers in the tens column from the top number:
0-0=0
| Place value | thousands | hundreds | tens | ones |
| 8 | 0 | 0 | 0 | |
| - | 3 | 0 | 0 | |
| 0 | 0 |
Because the upper digit (0) in the hundreds column is too small to get a positive difference, borrow 1 from the digit (8) in the next number place which becomes (7) and get (10).
| Place value | thousands | hundreds | tens | ones |
| 7 | 10 | |||
| 8 | 0 | 0 | 0 | |
| - | 3 | 0 | 0 | |
| 0 | 0 |
Subtract the numbers in the hundreds column from the top number:
10-3=7
| Place value | thousands | hundreds | tens | ones |
| 7 | 10 | |||
| 8 | 0 | 0 | 0 | |
| - | 3 | 0 | 0 | |
| 7 | 0 | 0 |
Write 7 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 7 | 10 | |||
| 8 | 0 | 0 | 0 | |
| - | 3 | 0 | 0 | |
| 7 | 7 | 0 | 0 |
The solution is: 7,700
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