Solution - Long subtraction
76,100
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 |
| 8 | 6 | 0 | 0 | 0 | |
| - | 9 | 9 | 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 | ten thousands | thousands | hundreds | tens | ones |
| 8 | 6 | 0 | 0 | 0 | |
| - | 9 | 9 | 0 | 0 | |
| 0 |
Subtract the numbers in the tens column from the top number:
0-0=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 8 | 6 | 0 | 0 | 0 | |
| - | 9 | 9 | 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 (6) in the next number place which becomes (5) and get (10).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 5 | 10 | ||||
| 8 | 6 | 0 | 0 | 0 | |
| - | 9 | 9 | 0 | 0 | |
| 0 | 0 |
Subtract the numbers in the hundreds column from the top number:
10-9=1
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 5 | 10 | ||||
| 8 | 6 | 0 | 0 | 0 | |
| - | 9 | 9 | 0 | 0 | |
| 1 | 0 | 0 |
Because the upper digit (5) in the thousands 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 (15).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 15 | ||||
| 5 | 10 | ||||
| 8 | 6 | 0 | 0 | 0 | |
| - | 9 | 9 | 0 | 0 | |
| 1 | 0 | 0 |
Subtract the numbers in the thousands column from the top number:
15-9=6
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 15 | ||||
| 5 | 10 | ||||
| 8 | 6 | 0 | 0 | 0 | |
| - | 9 | 9 | 0 | 0 | |
| 6 | 1 | 0 | 0 |
Write 7 in the ten thousands place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 15 | ||||
| 5 | 10 | ||||
| 8 | 6 | 0 | 0 | 0 | |
| - | 9 | 9 | 0 | 0 | |
| 7 | 6 | 1 | 0 | 0 |
The solution is: 76,100
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