Solution - Long subtraction
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 9 | 0 | 0 | 2 | 5 | 1 | |
| - | 4 | 4 | 1 | 0 | 3 | |
2. Subtract the numbers using long subtraction method
Because the upper digit (1) in the ones column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (11).
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 11 | |||||
| 9 | 0 | 0 | 2 | 5 | 1 | |
| - | 4 | 4 | 1 | 0 | 3 | |
Subtract the numbers in the ones column from the top number:
11-3=8
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 11 | |||||
| 9 | 0 | 0 | 2 | 5 | 1 | |
| - | 4 | 4 | 1 | 0 | 3 | |
| 8 |
Subtract the numbers in the tens column from the top number:
4-0=4
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 11 | |||||
| 9 | 0 | 0 | 2 | 5 | 1 | |
| - | 4 | 4 | 1 | 0 | 3 | |
| 4 | 8 |
Subtract the numbers in the hundreds column from the top number:
2-1=1
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 11 | |||||
| 9 | 0 | 0 | 2 | 5 | 1 | |
| - | 4 | 4 | 1 | 0 | 3 | |
| 1 | 4 | 8 |
Because the upper digit (0) in the thousands column is too small to get a positive difference, borrow 1 from the number to the left (90) which becomes (89) and get (10).
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 9 | 10 | ||||
| 4 | 11 | |||||
| 9 | 0 | 0 | 2 | 5 | 1 | |
| - | 4 | 4 | 1 | 0 | 3 | |
| 1 | 4 | 8 |
Subtract the numbers in the thousands column from the top number:
10-4=6
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 9 | 10 | ||||
| 4 | 11 | |||||
| 9 | 0 | 0 | 2 | 5 | 1 | |
| - | 4 | 4 | 1 | 0 | 3 | |
| 6 | 1 | 4 | 8 |
Subtract the numbers in the ten thousands column from the top number:
9-4=5
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 9 | 10 | ||||
| 4 | 11 | |||||
| 9 | 0 | 0 | 2 | 5 | 1 | |
| - | 4 | 4 | 1 | 0 | 3 | |
| 5 | 6 | 1 | 4 | 8 |
Write 8 in the hundred thousands place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 9 | 10 | ||||
| 4 | 11 | |||||
| 9 | 0 | 0 | 2 | 5 | 1 | |
| - | 4 | 4 | 1 | 0 | 3 | |
| 8 | 5 | 6 | 1 | 4 | 8 |
The solution is: 856,148
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