Solution - Long subtraction
7,229
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 7 | 2 | 4 | 6 | |
| 5 | ||||
| - | 1 | 2 | ||
2. Subtract the numbers using long subtraction method
Because the upper digit (6) in the ones column is too small to get a positive difference, borrow 1 from the digit (4) in the next number place which becomes (3) and get (16).
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 7 | 2 | 4 | 6 | |
| 5 | ||||
| - | 1 | 2 | ||
Subtract the numbers in the ones column from the top number:
16-5-2=9
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 7 | 2 | 4 | 6 | |
| 5 | ||||
| - | 1 | 2 | ||
| 9 |
Subtract the numbers in the tens column from the top number:
3-1=2
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 7 | 2 | 4 | 6 | |
| 5 | ||||
| - | 1 | 2 | ||
| 2 | 9 |
Write 2 in the hundreds place.
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 7 | 2 | 4 | 6 | |
| 5 | ||||
| - | 1 | 2 | ||
| 2 | 2 | 9 |
Write 7 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 7 | 2 | 4 | 6 | |
| 5 | ||||
| - | 1 | 2 | ||
| 7 | 2 | 2 | 9 |
The solution is: 7,229
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