Soluzione - Long subtraction
159,3
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones | . | tenths |
| 2 | 0 | 3 | , | 3 | |
| - | 4 | 4 | |||
| , |
Put zeros in the blank number places:
| Place value | hundreds | tens | ones | . | tenths |
| 2 | 0 | 3 | , | 3 | |
| - | 4 | 4 | , | 0 | |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
3-0=3
| Place value | hundreds | tens | ones | . | tenths |
| 2 | 0 | 3 | , | 3 | |
| - | 4 | 4 | , | 0 | |
| , | 3 |
Because the upper digit (3) in the ones column is too small to get a positive difference, borrow 1 from the number to the left (20) which becomes (19) and get (13).
| Place value | hundreds | tens | ones | . | tenths |
| 1 | 9 | 13 | |||
| 2 | 0 | 3 | , | 3 | |
| - | 4 | 4 | , | 0 | |
| , | 3 |
Subtract the numbers in the ones column from the top number:
13-4=9
| Place value | hundreds | tens | ones | . | tenths |
| 1 | 9 | 13 | |||
| 2 | 0 | 3 | , | 3 | |
| - | 4 | 4 | , | 0 | |
| 9 | , | 3 |
Subtract the numbers in the tens column from the top number:
9-4=5
| Place value | hundreds | tens | ones | . | tenths |
| 1 | 9 | 13 | |||
| 2 | 0 | 3 | , | 3 | |
| - | 4 | 4 | , | 0 | |
| 5 | 9 | , | 3 |
Write 1 in the hundreds place.
| Place value | hundreds | tens | ones | . | tenths |
| 1 | 9 | 13 | |||
| 2 | 0 | 3 | , | 3 | |
| - | 4 | 4 | , | 0 | |
| 1 | 5 | 9 | , | 3 |
The solution is: 159,3
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