Soluzione - Long subtraction
24,39
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 6 | , | 1 | 9 | |
| - | 1 | , | 8 | ||
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 6 | , | 1 | 9 | |
| - | 1 | , | 8 | 0 | |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
9-0=9
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 6 | , | 1 | 9 | |
| - | 1 | , | 8 | 0 | |
| , | 9 |
Because the upper digit (1) 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 (11).
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 11 | ||||
| 2 | 6 | , | 1 | 9 | |
| - | 1 | , | 8 | 0 | |
| , | 9 |
Subtract the numbers in the tenths column from the top number:
11-8=3
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 11 | ||||
| 2 | 6 | , | 1 | 9 | |
| - | 1 | , | 8 | 0 | |
| , | 3 | 9 |
Subtract the numbers in the ones column from the top number:
5-1=4
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 11 | ||||
| 2 | 6 | , | 1 | 9 | |
| - | 1 | , | 8 | 0 | |
| 4 | , | 3 | 9 |
Write 2 in the tens place.
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 11 | ||||
| 2 | 6 | , | 1 | 9 | |
| - | 1 | , | 8 | 0 | |
| 2 | 4 | , | 3 | 9 |
The solution is: 24,39
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