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Solution - Long subtraction
1,719
Other Ways to Solve:
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 7 | 2 | 0 | |
| - | 1 | |||
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the ones column is too small to get a positive difference, borrow 1 from the digit (2) in the next number place which becomes (1) and get (10).
| Place value | thousands | hundreds | tens | ones |
| 1 | 10 | |||
| 1 | 7 | 2 | 0 | |
| - | 1 | |||
Subtract the numbers in the ones column from the top number:
10-1=9
| Place value | thousands | hundreds | tens | ones |
| 1 | 10 | |||
| 1 | 7 | 2 | 0 | |
| - | 1 | |||
| 9 |
Write 1 in the tens place.
| Place value | thousands | hundreds | tens | ones |
| 1 | 10 | |||
| 1 | 7 | 2 | 0 | |
| - | 1 | |||
| 1 | 9 |
Write 7 in the hundreds place.
| Place value | thousands | hundreds | tens | ones |
| 1 | 10 | |||
| 1 | 7 | 2 | 0 | |
| - | 1 | |||
| 7 | 1 | 9 |
Write 1 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 1 | 10 | |||
| 1 | 7 | 2 | 0 | |
| - | 1 | |||
| 1 | 7 | 1 | 9 |
The solution is: 1,719
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