Soluzione - Long subtraction
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | , | 7 | 3 | ||
| - | 0 | , | 7 | 7 | 2 |
| , |
Put zeros in the blank number places:
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | , | 7 | 3 | 0 | |
| - | 0 | , | 7 | 7 | 2 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the thousandths 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 (10).
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 10 | ||||
| 2 | , | 7 | 3 | 0 | |
| - | 0 | , | 7 | 7 | 2 |
| , |
Subtract the numbers in the thousandths column from the top number:
10-0-2=8
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 10 | ||||
| 2 | , | 7 | 3 | 0 | |
| - | 0 | , | 7 | 7 | 2 |
| , | 8 |
Because the upper digit (2) in the hundredths 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 (12).
| Place value | ones | . | tenths | hundredths | thousandths |
| 6 | 12 | ||||
| 2 | 10 | ||||
| 2 | , | 7 | 3 | 0 | |
| - | 0 | , | 7 | 7 | 2 |
| , | 8 |
Subtract the numbers in the hundredths column from the top number:
12-7=5
| Place value | ones | . | tenths | hundredths | thousandths |
| 6 | 12 | ||||
| 2 | 10 | ||||
| 2 | , | 7 | 3 | 0 | |
| - | 0 | , | 7 | 7 | 2 |
| , | 5 | 8 |
Because the upper digit (6) in the tenths column is too small to get a positive difference, borrow 1 from the digit (2) in the next number place which becomes (1) and get (16).
| Place value | ones | . | tenths | hundredths | thousandths |
| 1 | 16 | ||||
| 6 | 12 | ||||
| 2 | 10 | ||||
| 2 | , | 7 | 3 | 0 | |
| - | 0 | , | 7 | 7 | 2 |
| , | 5 | 8 |
Subtract the numbers in the tenths column from the top number:
16-7=9
| Place value | ones | . | tenths | hundredths | thousandths |
| 1 | 16 | ||||
| 6 | 12 | ||||
| 2 | 10 | ||||
| 2 | , | 7 | 3 | 0 | |
| - | 0 | , | 7 | 7 | 2 |
| , | 9 | 5 | 8 |
Subtract the numbers in the ones column from the top number:
1-0=1
| Place value | ones | . | tenths | hundredths | thousandths |
| 1 | 16 | ||||
| 6 | 12 | ||||
| 2 | 10 | ||||
| 2 | , | 7 | 3 | 0 | |
| - | 0 | , | 7 | 7 | 2 |
| 1 | , | 9 | 5 | 8 |
The solution is: 1,958
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