Soluzione - Long subtraction
50,49
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 9 | , | 2 | 5 | |
| - | 8 | , | 7 | 6 | |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (5) in the hundredths column is too small to get a positive difference, borrow 1 from the digit (2) in the next number place which becomes (1) and get (15).
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 15 | ||||
| 5 | 9 | , | 2 | 5 | |
| - | 8 | , | 7 | 6 | |
| , |
Subtract the numbers in the hundredths column from the top number:
15-6=9
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 15 | ||||
| 5 | 9 | , | 2 | 5 | |
| - | 8 | , | 7 | 6 | |
| , | 9 |
Because the upper digit (1) in the tenths column is too small to get a positive difference, borrow 1 from the digit (9) in the next number place which becomes (8) and get (11).
| Place value | tens | ones | . | tenths | hundredths |
| 8 | 11 | ||||
| 1 | 15 | ||||
| 5 | 9 | , | 2 | 5 | |
| - | 8 | , | 7 | 6 | |
| , | 9 |
Subtract the numbers in the tenths column from the top number:
11-7=4
| Place value | tens | ones | . | tenths | hundredths |
| 8 | 11 | ||||
| 1 | 15 | ||||
| 5 | 9 | , | 2 | 5 | |
| - | 8 | , | 7 | 6 | |
| , | 4 | 9 |
Subtract the numbers in the ones column from the top number:
8-8=0
| Place value | tens | ones | . | tenths | hundredths |
| 8 | 11 | ||||
| 1 | 15 | ||||
| 5 | 9 | , | 2 | 5 | |
| - | 8 | , | 7 | 6 | |
| 0 | , | 4 | 9 |
Write 5 in the tens place.
| Place value | tens | ones | . | tenths | hundredths |
| 8 | 11 | ||||
| 1 | 15 | ||||
| 5 | 9 | , | 2 | 5 | |
| - | 8 | , | 7 | 6 | |
| 5 | 0 | , | 4 | 9 |
The solution is: 50,49
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