Solution - Long subtraction
713
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 9 | 0 | 7 | |
| - | 1 | 9 | 4 |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
7-4=3
| Place value | hundreds | tens | ones |
| 9 | 0 | 7 | |
| - | 1 | 9 | 4 |
| 3 |
Because the upper digit (0) in the tens column is too small to get a positive difference, borrow 1 from the digit (9) in the next number place which becomes (8) and get (10).
| Place value | hundreds | tens | ones |
| 8 | 10 | ||
| 9 | 0 | 7 | |
| - | 1 | 9 | 4 |
| 3 |
Subtract the numbers in the tens column from the top number:
10-9=1
| Place value | hundreds | tens | ones |
| 8 | 10 | ||
| 9 | 0 | 7 | |
| - | 1 | 9 | 4 |
| 1 | 3 |
Subtract the numbers in the hundreds column from the top number:
8-1=7
| Place value | hundreds | tens | ones |
| 8 | 10 | ||
| 9 | 0 | 7 | |
| - | 1 | 9 | 4 |
| 7 | 1 | 3 |
The solution is: 713
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