Solution - Long subtraction
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths |
| 0 | . | 0 | 0 | 0 | 3 | 2 | 9 | |
| - | 0 | . | 0 | 0 | 0 | 0 | 7 | 2 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the millionths column from the top number:
9-2=7
| Place value | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths |
| 0 | . | 0 | 0 | 0 | 3 | 2 | 9 | |
| - | 0 | . | 0 | 0 | 0 | 0 | 7 | 2 |
| . | 7 |
Because the upper digit (2) in the hundred thousandths 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 (12).
| Place value | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths |
| 2 | 12 | |||||||
| 0 | . | 0 | 0 | 0 | 3 | 2 | 9 | |
| - | 0 | . | 0 | 0 | 0 | 0 | 7 | 2 |
| . | 7 |
Subtract the numbers in the hundred thousandths column from the top number:
12-7=5
| Place value | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths |
| 2 | 12 | |||||||
| 0 | . | 0 | 0 | 0 | 3 | 2 | 9 | |
| - | 0 | . | 0 | 0 | 0 | 0 | 7 | 2 |
| . | 5 | 7 |
Subtract the numbers in the ten thousandths column from the top number:
2-0=2
| Place value | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths |
| 2 | 12 | |||||||
| 0 | . | 0 | 0 | 0 | 3 | 2 | 9 | |
| - | 0 | . | 0 | 0 | 0 | 0 | 7 | 2 |
| . | 2 | 5 | 7 |
Subtract the numbers in the thousandths column from the top number:
0-0=0
| Place value | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths |
| 2 | 12 | |||||||
| 0 | . | 0 | 0 | 0 | 3 | 2 | 9 | |
| - | 0 | . | 0 | 0 | 0 | 0 | 7 | 2 |
| . | 0 | 2 | 5 | 7 |
Subtract the numbers in the hundredths column from the top number:
0-0=0
| Place value | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths |
| 2 | 12 | |||||||
| 0 | . | 0 | 0 | 0 | 3 | 2 | 9 | |
| - | 0 | . | 0 | 0 | 0 | 0 | 7 | 2 |
| . | 0 | 0 | 2 | 5 | 7 |
Subtract the numbers in the tenths column from the top number:
0-0=0
| Place value | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths |
| 2 | 12 | |||||||
| 0 | . | 0 | 0 | 0 | 3 | 2 | 9 | |
| - | 0 | . | 0 | 0 | 0 | 0 | 7 | 2 |
| . | 0 | 0 | 0 | 2 | 5 | 7 |
Subtract the numbers in the ones column from the top number:
0-0=0
| Place value | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths |
| 2 | 12 | |||||||
| 0 | . | 0 | 0 | 0 | 3 | 2 | 9 | |
| - | 0 | . | 0 | 0 | 0 | 0 | 7 | 2 |
| 0 | . | 0 | 0 | 0 | 2 | 5 | 7 |
The solution is: 0.000257
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