Soluzione - Long subtraction
742,4
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones | . | tenths |
| 7 | 6 | 7 | , | 3 | |
| - | 2 | 4 | , | 9 | |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (3) in the tenths column is too small to get a positive difference, borrow 1 from the digit (7) in the next number place which becomes (6) and get (13).
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 13 | ||||
| 7 | 6 | 7 | , | 3 | |
| - | 2 | 4 | , | 9 | |
| , |
Subtract the numbers in the tenths column from the top number:
13-9=4
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 13 | ||||
| 7 | 6 | 7 | , | 3 | |
| - | 2 | 4 | , | 9 | |
| , | 4 |
Subtract the numbers in the ones column from the top number:
6-4=2
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 13 | ||||
| 7 | 6 | 7 | , | 3 | |
| - | 2 | 4 | , | 9 | |
| 2 | , | 4 |
Subtract the numbers in the tens column from the top number:
6-2=4
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 13 | ||||
| 7 | 6 | 7 | , | 3 | |
| - | 2 | 4 | , | 9 | |
| 4 | 2 | , | 4 |
Write 7 in the hundreds place.
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 13 | ||||
| 7 | 6 | 7 | , | 3 | |
| - | 2 | 4 | , | 9 | |
| 7 | 4 | 2 | , | 4 |
The solution is: 742,4
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