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 |
| 5 | 3 | , | 1 | 9 | 9 | |
| - | 2 | 7 | , | 6 | 1 | |
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 5 | 3 | , | 1 | 9 | 9 | |
| - | 2 | 7 | , | 6 | 1 | 0 |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the thousandths column from the top number:
9-0=9
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 5 | 3 | , | 1 | 9 | 9 | |
| - | 2 | 7 | , | 6 | 1 | 0 |
| , | 9 |
Subtract the numbers in the hundredths column from the top number:
9-1=8
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 5 | 3 | , | 1 | 9 | 9 | |
| - | 2 | 7 | , | 6 | 1 | 0 |
| , | 8 | 9 |
Because the upper digit (1) 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 (11).
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 2 | 11 | |||||
| 5 | 3 | , | 1 | 9 | 9 | |
| - | 2 | 7 | , | 6 | 1 | 0 |
| , | 8 | 9 |
Subtract the numbers in the tenths column from the top number:
11-6=5
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 2 | 11 | |||||
| 5 | 3 | , | 1 | 9 | 9 | |
| - | 2 | 7 | , | 6 | 1 | 0 |
| , | 5 | 8 | 9 |
Because the upper digit (2) in the ones 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 (12).
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 4 | 12 | |||||
| 2 | 11 | |||||
| 5 | 3 | , | 1 | 9 | 9 | |
| - | 2 | 7 | , | 6 | 1 | 0 |
| , | 5 | 8 | 9 |
Subtract the numbers in the ones column from the top number:
12-7=5
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 4 | 12 | |||||
| 2 | 11 | |||||
| 5 | 3 | , | 1 | 9 | 9 | |
| - | 2 | 7 | , | 6 | 1 | 0 |
| 5 | , | 5 | 8 | 9 |
Subtract the numbers in the tens column from the top number:
4-2=2
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 4 | 12 | |||||
| 2 | 11 | |||||
| 5 | 3 | , | 1 | 9 | 9 | |
| - | 2 | 7 | , | 6 | 1 | 0 |
| 2 | 5 | , | 5 | 8 | 9 |
The solution is: 25,589
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