Soluzione - Long subtraction
11,91
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 3 | , | 3 | 1 | |
| - | 1 | , | 4 | ||
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 3 | , | 3 | 1 | |
| - | 1 | , | 4 | 0 | |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
1-0=1
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 3 | , | 3 | 1 | |
| - | 1 | , | 4 | 0 | |
| , | 1 |
Because the upper digit (3) in the tenths column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (13).
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 13 | ||||
| 1 | 3 | , | 3 | 1 | |
| - | 1 | , | 4 | 0 | |
| , | 1 |
Subtract the numbers in the tenths column from the top number:
13-4=9
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 13 | ||||
| 1 | 3 | , | 3 | 1 | |
| - | 1 | , | 4 | 0 | |
| , | 9 | 1 |
Subtract the numbers in the ones column from the top number:
2-1=1
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 13 | ||||
| 1 | 3 | , | 3 | 1 | |
| - | 1 | , | 4 | 0 | |
| 1 | , | 9 | 1 |
Write 1 in the tens place.
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 13 | ||||
| 1 | 3 | , | 3 | 1 | |
| - | 1 | , | 4 | 0 | |
| 1 | 1 | , | 9 | 1 |
The solution is: 11,91
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