คำตอบ - Long subtraction
5.403
คำอธิบายทีละขั้นตอน
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths | thousandths |
| 8 | . | 8 | 2 | 3 | |
| - | 3 | . | 4 | 2 | |
| . |
Put zeros in the blank number places:
| Place value | ones | . | tenths | hundredths | thousandths |
| 8 | . | 8 | 2 | 3 | |
| - | 3 | . | 4 | 2 | 0 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the thousandths column from the top number:
3-0=3
| Place value | ones | . | tenths | hundredths | thousandths |
| 8 | . | 8 | 2 | 3 | |
| - | 3 | . | 4 | 2 | 0 |
| . | 3 |
Subtract the numbers in the hundredths column from the top number:
2-2=0
| Place value | ones | . | tenths | hundredths | thousandths |
| 8 | . | 8 | 2 | 3 | |
| - | 3 | . | 4 | 2 | 0 |
| . | 0 | 3 |
Subtract the numbers in the tenths column from the top number:
8-4=4
| Place value | ones | . | tenths | hundredths | thousandths |
| 8 | . | 8 | 2 | 3 | |
| - | 3 | . | 4 | 2 | 0 |
| . | 4 | 0 | 3 |
Subtract the numbers in the ones column from the top number:
8-3=5
| Place value | ones | . | tenths | hundredths | thousandths |
| 8 | . | 8 | 2 | 3 | |
| - | 3 | . | 4 | 2 | 0 |
| 5 | . | 4 | 0 | 3 |
The solution is: 5.403
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