Solution - Long subtraction
2.701
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | . | 3 | 4 | 9 | |
| - | 0 | . | 6 | 4 | 8 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the thousandths column from the top number:
9-8=1
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | . | 3 | 4 | 9 | |
| - | 0 | . | 6 | 4 | 8 |
| . | 1 |
Subtract the numbers in the hundredths column from the top number:
4-4=0
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | . | 3 | 4 | 9 | |
| - | 0 | . | 6 | 4 | 8 |
| . | 0 | 1 |
Because the upper digit (3) in the tenths column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (13).
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 13 | ||||
| 3 | . | 3 | 4 | 9 | |
| - | 0 | . | 6 | 4 | 8 |
| . | 0 | 1 |
Subtract the numbers in the tenths column from the top number:
13-6=7
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 13 | ||||
| 3 | . | 3 | 4 | 9 | |
| - | 0 | . | 6 | 4 | 8 |
| . | 7 | 0 | 1 |
Subtract the numbers in the ones column from the top number:
2-0=2
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 13 | ||||
| 3 | . | 3 | 4 | 9 | |
| - | 0 | . | 6 | 4 | 8 |
| 2 | . | 7 | 0 | 1 |
The solution is: 2.701
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