Soluzione - Long subtraction
42,23
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones | . | tenths | hundredths |
| 7 | 5 | 4 | , | 4 | 1 | |
| - | 7 | 1 | 2 | , | 1 | 8 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (1) in the hundredths column is too small to get a positive difference, borrow 1 from the digit (4) in the next number place which becomes (3) and get (11).
| Place value | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 11 | |||||
| 7 | 5 | 4 | , | 4 | 1 | |
| - | 7 | 1 | 2 | , | 1 | 8 |
| , |
Subtract the numbers in the hundredths column from the top number:
11-8=3
| Place value | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 11 | |||||
| 7 | 5 | 4 | , | 4 | 1 | |
| - | 7 | 1 | 2 | , | 1 | 8 |
| , | 3 |
Subtract the numbers in the tenths column from the top number:
3-1=2
| Place value | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 11 | |||||
| 7 | 5 | 4 | , | 4 | 1 | |
| - | 7 | 1 | 2 | , | 1 | 8 |
| , | 2 | 3 |
Subtract the numbers in the ones column from the top number:
4-2=2
| Place value | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 11 | |||||
| 7 | 5 | 4 | , | 4 | 1 | |
| - | 7 | 1 | 2 | , | 1 | 8 |
| 2 | , | 2 | 3 |
Subtract the numbers in the tens column from the top number:
5-1=4
| Place value | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 11 | |||||
| 7 | 5 | 4 | , | 4 | 1 | |
| - | 7 | 1 | 2 | , | 1 | 8 |
| 4 | 2 | , | 2 | 3 |
Subtract the numbers in the hundreds column from the top number:
7-7=0
| Place value | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 11 | |||||
| 7 | 5 | 4 | , | 4 | 1 | |
| - | 7 | 1 | 2 | , | 1 | 8 |
| 0 | 4 | 2 | , | 2 | 3 |
The solution is: 42,23
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