Soluzione - Long subtraction
3,643
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths | thousandths |
| 4 | , | 5 | |||
| - | 0 | , | 8 | 5 | 7 |
| , |
Put zeros in the blank number places:
| Place value | ones | . | tenths | hundredths | thousandths |
| 4 | , | 5 | 0 | 0 | |
| - | 0 | , | 8 | 5 | 7 |
| , |
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 number to the left (50) which becomes (49) and get (10).
| Place value | ones | . | tenths | hundredths | thousandths |
| 4 | 9 | 10 | |||
| 4 | , | 5 | 0 | 0 | |
| - | 0 | , | 8 | 5 | 7 |
| , |
Subtract the numbers in the thousandths column from the top number:
10-0-7=3
| Place value | ones | . | tenths | hundredths | thousandths |
| 4 | 9 | 10 | |||
| 4 | , | 5 | 0 | 0 | |
| - | 0 | , | 8 | 5 | 7 |
| , | 3 |
Subtract the numbers in the hundredths column from the top number:
9-5=4
| Place value | ones | . | tenths | hundredths | thousandths |
| 4 | 9 | 10 | |||
| 4 | , | 5 | 0 | 0 | |
| - | 0 | , | 8 | 5 | 7 |
| , | 4 | 3 |
Because the upper digit (4) in the tenths column is too small to get a positive difference, borrow 1 from the digit (4) in the next number place which becomes (3) and get (14).
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 14 | ||||
| 4 | 9 | 10 | |||
| 4 | , | 5 | 0 | 0 | |
| - | 0 | , | 8 | 5 | 7 |
| , | 4 | 3 |
Subtract the numbers in the tenths column from the top number:
14-8=6
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 14 | ||||
| 4 | 9 | 10 | |||
| 4 | , | 5 | 0 | 0 | |
| - | 0 | , | 8 | 5 | 7 |
| , | 6 | 4 | 3 |
Subtract the numbers in the ones column from the top number:
3-0=3
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 14 | ||||
| 4 | 9 | 10 | |||
| 4 | , | 5 | 0 | 0 | |
| - | 0 | , | 8 | 5 | 7 |
| 3 | , | 6 | 4 | 3 |
The solution is: 3,643
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