Soluzione - Long subtraction
7,5
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 1 | 0 | , | 3 | |
| 0 | , | 5 | ||
| - | 2 | , | 3 | |
| , |
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 number to the left (10) which becomes (09) and get (13).
| Place value | tens | ones | . | tenths |
| 0 | 13 | |||
| 1 | 0 | , | 3 | |
| 0 | , | 5 | ||
| - | 2 | , | 3 | |
| , |
Subtract the numbers in the tenths column from the top number:
13-5-3=5
| Place value | tens | ones | . | tenths |
| 0 | 13 | |||
| 1 | 0 | , | 3 | |
| 0 | , | 5 | ||
| - | 2 | , | 3 | |
| , | 5 |
Subtract the numbers in the ones column from the top number:
9-0-2=7
| Place value | tens | ones | . | tenths |
| 0 | 13 | |||
| 1 | 0 | , | 3 | |
| 0 | , | 5 | ||
| - | 2 | , | 3 | |
| 7 | , | 5 |
Write 0 in the tens place.
| Place value | tens | ones | . | tenths |
| 0 | 13 | |||
| 1 | 0 | , | 3 | |
| 0 | , | 5 | ||
| - | 2 | , | 3 | |
| 0 | 7 | , | 5 |
The solution is: 7,5
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