Soluzione - Long subtraction
39,21
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 5 | , | 3 | 5 | |
| - | 2 | 6 | , | 1 | 4 |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
5-4=1
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 5 | , | 3 | 5 | |
| - | 2 | 6 | , | 1 | 4 |
| , | 1 |
Subtract the numbers in the tenths column from the top number:
3-1=2
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 5 | , | 3 | 5 | |
| - | 2 | 6 | , | 1 | 4 |
| , | 2 | 1 |
Because the upper digit (5) in the ones column is too small to get a positive difference, borrow 1 from the digit (6) in the next number place which becomes (5) and get (15).
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 15 | ||||
| 6 | 5 | , | 3 | 5 | |
| - | 2 | 6 | , | 1 | 4 |
| , | 2 | 1 |
Subtract the numbers in the ones column from the top number:
15-6=9
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 15 | ||||
| 6 | 5 | , | 3 | 5 | |
| - | 2 | 6 | , | 1 | 4 |
| 9 | , | 2 | 1 |
Subtract the numbers in the tens column from the top number:
5-2=3
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 15 | ||||
| 6 | 5 | , | 3 | 5 | |
| - | 2 | 6 | , | 1 | 4 |
| 3 | 9 | , | 2 | 1 |
The solution is: 39,21
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