Soluzione - Long subtraction
13
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 1 | 8 | , | 2 | |
| 1 | ||||
| - | 4 | , | 2 | |
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths |
| 1 | 8 | , | 2 | |
| 1 | , | 0 | ||
| - | 4 | , | 2 | |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
2-0-2=0
| Place value | tens | ones | . | tenths |
| 1 | 8 | , | 2 | |
| 1 | , | 0 | ||
| - | 4 | , | 2 | |
| , | 0 |
Subtract the numbers in the ones column from the top number:
8-1-4=3
| Place value | tens | ones | . | tenths |
| 1 | 8 | , | 2 | |
| 1 | , | 0 | ||
| - | 4 | , | 2 | |
| 3 | , | 0 |
Write 1 in the tens place.
| Place value | tens | ones | . | tenths |
| 1 | 8 | , | 2 | |
| 1 | , | 0 | ||
| - | 4 | , | 2 | |
| 1 | 3 | , | 0 |
The solution is: 13
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