Soluzione - Long subtraction
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 5 | , | 1 | 3 | 1 | |
| - | 1 | 1 | , | 5 | 7 | |
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 5 | , | 1 | 3 | 1 | |
| - | 1 | 1 | , | 5 | 7 | 0 |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the thousandths column from the top number:
1-0=1
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 5 | , | 1 | 3 | 1 | |
| - | 1 | 1 | , | 5 | 7 | 0 |
| , | 1 |
Because the upper digit (3) in the hundredths column is too small to get a positive difference, borrow 1 from the digit (1) in the next number place which becomes (0) and get (13).
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 13 | |||||
| 1 | 5 | , | 1 | 3 | 1 | |
| - | 1 | 1 | , | 5 | 7 | 0 |
| , | 1 |
Subtract the numbers in the hundredths column from the top number:
13-7=6
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 13 | |||||
| 1 | 5 | , | 1 | 3 | 1 | |
| - | 1 | 1 | , | 5 | 7 | 0 |
| , | 6 | 1 |
Because the upper digit (0) in the tenths column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (10).
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 4 | 10 | |||||
| 0 | 13 | |||||
| 1 | 5 | , | 1 | 3 | 1 | |
| - | 1 | 1 | , | 5 | 7 | 0 |
| , | 6 | 1 |
Subtract the numbers in the tenths column from the top number:
10-5=5
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 4 | 10 | |||||
| 0 | 13 | |||||
| 1 | 5 | , | 1 | 3 | 1 | |
| - | 1 | 1 | , | 5 | 7 | 0 |
| , | 5 | 6 | 1 |
Subtract the numbers in the ones column from the top number:
4-1=3
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 4 | 10 | |||||
| 0 | 13 | |||||
| 1 | 5 | , | 1 | 3 | 1 | |
| - | 1 | 1 | , | 5 | 7 | 0 |
| 3 | , | 5 | 6 | 1 |
Subtract the numbers in the tens column from the top number:
1-1=0
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 4 | 10 | |||||
| 0 | 13 | |||||
| 1 | 5 | , | 1 | 3 | 1 | |
| - | 1 | 1 | , | 5 | 7 | 0 |
| 0 | 3 | , | 5 | 6 | 1 |
The solution is: 3,561
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