Soluzione - Long subtraction
3,602
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths | thousandths |
| 4 | , | 0 | 8 | ||
| - | 0 | , | 4 | 7 | 8 |
| , |
Put zeros in the blank number places:
| Place value | ones | . | tenths | hundredths | thousandths |
| 4 | , | 0 | 8 | 0 | |
| - | 0 | , | 4 | 7 | 8 |
| , |
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 (8) in the next number place which becomes (7) and get (10).
| Place value | ones | . | tenths | hundredths | thousandths |
| 7 | 10 | ||||
| 4 | , | 0 | 8 | 0 | |
| - | 0 | , | 4 | 7 | 8 |
| , |
Subtract the numbers in the thousandths column from the top number:
10-0-8=2
| Place value | ones | . | tenths | hundredths | thousandths |
| 7 | 10 | ||||
| 4 | , | 0 | 8 | 0 | |
| - | 0 | , | 4 | 7 | 8 |
| , | 2 |
Subtract the numbers in the hundredths column from the top number:
7-7=0
| Place value | ones | . | tenths | hundredths | thousandths |
| 7 | 10 | ||||
| 4 | , | 0 | 8 | 0 | |
| - | 0 | , | 4 | 7 | 8 |
| , | 0 | 2 |
Because the upper digit (0) 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 (10).
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 10 | ||||
| 7 | 10 | ||||
| 4 | , | 0 | 8 | 0 | |
| - | 0 | , | 4 | 7 | 8 |
| , | 0 | 2 |
Subtract the numbers in the tenths column from the top number:
10-4=6
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 10 | ||||
| 7 | 10 | ||||
| 4 | , | 0 | 8 | 0 | |
| - | 0 | , | 4 | 7 | 8 |
| , | 6 | 0 | 2 |
Subtract the numbers in the ones column from the top number:
3-0=3
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 10 | ||||
| 7 | 10 | ||||
| 4 | , | 0 | 8 | 0 | |
| - | 0 | , | 4 | 7 | 8 |
| 3 | , | 6 | 0 | 2 |
The solution is: 3,602
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