Soluzione - Long subtraction
12,7
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 1 | 3 | , | 7 | |
| - | 1 | |||
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths |
| 1 | 3 | , | 7 | |
| - | 1 | , | 0 | |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
7-0=7
| Place value | tens | ones | . | tenths |
| 1 | 3 | , | 7 | |
| - | 1 | , | 0 | |
| , | 7 |
Subtract the numbers in the ones column from the top number:
3-1=2
| Place value | tens | ones | . | tenths |
| 1 | 3 | , | 7 | |
| - | 1 | , | 0 | |
| 2 | , | 7 |
Write 1 in the tens place.
| Place value | tens | ones | . | tenths |
| 1 | 3 | , | 7 | |
| - | 1 | , | 0 | |
| 1 | 2 | , | 7 |
The solution is: 12,7
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