Soluzione - Long subtraction
26,82
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 8 | , | 7 | 2 | |
| - | 1 | , | 9 | ||
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 8 | , | 7 | 2 | |
| - | 1 | , | 9 | 0 | |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
2-0=2
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 8 | , | 7 | 2 | |
| - | 1 | , | 9 | 0 | |
| , | 2 |
Because the upper digit (7) in the tenths 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 (17).
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 17 | ||||
| 2 | 8 | , | 7 | 2 | |
| - | 1 | , | 9 | 0 | |
| , | 2 |
Subtract the numbers in the tenths column from the top number:
17-9=8
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 17 | ||||
| 2 | 8 | , | 7 | 2 | |
| - | 1 | , | 9 | 0 | |
| , | 8 | 2 |
Subtract the numbers in the ones column from the top number:
7-1=6
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 17 | ||||
| 2 | 8 | , | 7 | 2 | |
| - | 1 | , | 9 | 0 | |
| 6 | , | 8 | 2 |
Write 2 in the tens place.
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 17 | ||||
| 2 | 8 | , | 7 | 2 | |
| - | 1 | , | 9 | 0 | |
| 2 | 6 | , | 8 | 2 |
The solution is: 26,82
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