Megoldás - Long subtraction
Lépésről lépésre magyarázat
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 6 | , | 5 | ||
| - | 3 | 8 | , | 8 | 3 |
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 6 | , | 5 | 0 | |
| - | 3 | 8 | , | 8 | 3 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the hundredths 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 (10).
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 10 | ||||
| 5 | 6 | , | 5 | 0 | |
| - | 3 | 8 | , | 8 | 3 |
| , |
Subtract the numbers in the hundredths column from the top number:
10-0-3=7
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 10 | ||||
| 5 | 6 | , | 5 | 0 | |
| - | 3 | 8 | , | 8 | 3 |
| , | 7 |
Because the upper digit (4) in the tenths 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 (14).
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 14 | ||||
| 4 | 10 | ||||
| 5 | 6 | , | 5 | 0 | |
| - | 3 | 8 | , | 8 | 3 |
| , | 7 |
Subtract the numbers in the tenths column from the top number:
14-8=6
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 14 | ||||
| 4 | 10 | ||||
| 5 | 6 | , | 5 | 0 | |
| - | 3 | 8 | , | 8 | 3 |
| , | 6 | 7 |
Because the upper digit (5) 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 (15).
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 15 | ||||
| 5 | 14 | ||||
| 4 | 10 | ||||
| 5 | 6 | , | 5 | 0 | |
| - | 3 | 8 | , | 8 | 3 |
| , | 6 | 7 |
Subtract the numbers in the ones column from the top number:
15-8=7
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 15 | ||||
| 5 | 14 | ||||
| 4 | 10 | ||||
| 5 | 6 | , | 5 | 0 | |
| - | 3 | 8 | , | 8 | 3 |
| 7 | , | 6 | 7 |
Subtract the numbers in the tens column from the top number:
4-3=1
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 15 | ||||
| 5 | 14 | ||||
| 4 | 10 | ||||
| 5 | 6 | , | 5 | 0 | |
| - | 3 | 8 | , | 8 | 3 |
| 1 | 7 | , | 6 | 7 |
The solution is: 17,67
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